Report on Referred Fossils |
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| Stratigraphic range: |
Devonian and Mississippian |
| Kinds of fossils: |
Conodonts |
| Quadrangle or area: |
Howard Pass (100 samples) and Killik (1 sample) |
| Shipment No.: |
A-95-3 |
| Referred by: |
Dumoulin, Julie A.
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Dover, J. H.
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| Report prepared by: |
Harris, Anita G.
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| Date: |
03/17/1995 |
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Analysis of all samples is given in the accompanying 16-page table. The range of biostratigraphically important samples is shown on the accompanying diagram. The heavy-mineral concentrates were analyzed by Nancy Stamm; the residues have been returned to Julie Dumoulin. Please note a few (~4 samples have heavy-mineral concentrates that include chalcopyrite and bornite).
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| User Note module to be added |
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92ABS79A
, Howard Pass
, Howard Pass B-3. 66°24'28", 157°27'30". Bedded chert (96%) associated with 2% thinly-laminated (1 mm-thick), medium-gray, grayish-brown- to pale-brown-weathering, limestone with soft-sediment deformation and 2% basalt. Collected from possible fault slice of unknown limestone intercalated with Memorial Creek volcanics.
Collected at -800 m elevation in saddle -1/2 mile due north of Memorial Creek and -5 miles due west of Ipnavik River center NW 1/4 sec. 14., T. 12 S., R. 24 W.
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92ABS86A
, Howard Pass
, Howard Pass B-3. 68°24'50", 157°28'40". Blue-green to pale-blue-green and light-gray-brown interpillow limestone. Collected as probably interpillow limestone with Memorial Creek volcanics.
Collected at -860 m elevation, -1/2 mile northwest of 92ABS79A; center SE1/4 sec. 10, T. 12 S., R. 24 W.
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92ABS106
, Howard Pass
, Howard Pass B-3. 68°26'34", 157°15'10". Volcaniclastic(?) graywacke containing unknown fossil fragments, from the Memorial Creek unit at east end of interfingering pile of basalts, volcaniclastics and graywackes along to the north of Memorial Creek. Submitted as Devonian?), Permian(?) or Cretaceous(?).
Collected at -645 m elevation, on top of small knob, -1/3 mile southeast of Peak 690 m; SE1/4 sec. 34, T. 11 S., R. 20 W.
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unknown fossil fragments with "carapace"-like material
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92ABS180A
(32467-PC)
, Howard Pass
, Howard Pass C-5. 68°37'48", 158°52'45". Dark-brownish-gray to brownish-black, light-gray- to slightly brownish-weathering, mostly micritic dolostone (skeletal support stone and clast of brown mudstone and dolomitized mudstone) and dark-gray to black chert containing locally preserved rare to abundant crinoids interlayered (50:50) in 2-7-thick beds.
Collected from rubble at very top of -100 m-thick section of unknown facies of Lisburne Group(?) similar to basal part of section at Lisburne Ridge and resembles "Ipnavik facies" but is dolomitized and does not contain sills. Sample 92ADo274B is also from this unit.
Collected at top of hill 861 m, 1/2 mile due east of Rampart Creek and -2 1/2 miles SW of headwaters of Recon Creek; SW1/4 SW1/4 sec. 26, T. 9 S., R. 30 W.
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Bispathodus stabilis (Branson & Mehl) .....
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...... or Bispathodus utahensis Sandberg and Gutschick
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51 indet. bar, blade, and platform fragments
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92ABS194C
, Howard Pass
, Howard Pass A-2. 68°08'22", 156°46'50". Rubble blocks up to 0.5 cubic m of medium-light-gray, pale-yellowish-weathering, calcareous volcaniclastic(?) sandstone with local fine laminae and containing gastropods and possible crinoids.
Collected from 30 x 40-m rubble field (fault slice of interlayer?) surrounded by basalt, 150 m north of southernmost basalt in unnamed limy sandstone.
Collected at -800 m elevation on south side of saddle between two hills (860+ m). 1 mile east of hilltop 915 m, 2 1/2 miles south of Flora Creek and 1 1/4 miles north of Rough Mountain Creek; center SE1/4 sec. 27, T. 32 N., R. 30 W.
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92ABS196A
(32468-PC)
, Howard Pass
, Howard Pass A-2. 68°08'04', 156°53'20". Medium-gray, very light-gray-weathering limestone with peloids and possible skeletal grains.
Collected from unnamed limestone unit in structural contact with basalts. Limestone is of supposed Devonian age, but lithologies are similar to units of Mississippian age.
Collected at -580 m elevation on SW side of hill 671 m, -1/4 mile north of Rough Mountain Creek and -3 miles south of Flora Creek; NE1/4NE1/4 sec. 31, T. 32 N., R. 9 E.
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4 posterior Pa element fragments Polygnathus communis Branson & Mehl?
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2 juvenile incomplete Pa elements Polygnathus inornatus Branson
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9 Pa element fragments Polygnathus spp. indet.
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7 Pa element fragments Siphonodella sp. indet. of middle to late Kinderhookian morphotype
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UNASSIGNED ELEMENTS: 2 M and 1 Sc 19 indet. bar, blade, and platform fragments
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92ABS196B
, Howard Pass
, Howard Pass A-2 68°08'05", 156°52'40". Finely-laminated, bioturbated sandy limestone. Collected within 25 m of contact with basalts, stratigraphically below 92ABS196A.
From same locality as above, except collected <100 m south south of 92ABS196A.
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92ABS196C
(32469-PC)
, Howard Pass
, Howard Pass A-2 68°07'55", 156°52'40". Fine-grained, dark-gray to grayish-black limestone that looks like "Kuna-type" limestone.
Collected from float, associated with dark-gray phyllite, stratigraphically below 92ABS196A.
Collected at 560 m elevation, on south side of hill 671 m, -0.5 mile SE of 92ABS196A and B, -1/4 mile north of Rough Mountain Creek and -3 miles south of Flora Creek; S1/2 NW1/4 sec. 32, T. 32 N., R. 9 E.
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1 posterior Pa element fragment of a siphonodellid or polygnathid
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92AD7I
(31770-PC)
, Howard Pass
, Howard Pass C-2. 68°37'30", 136°40'40". Lisburne Group at Lisburne Ridge. 8-cm-thick layer of dark-brown to black dolostone having faint millimeter laminations and strong petroliferous odor; interlayered with black chert. Thin-section: dolomitized and silicified probably dolomudstone with skeletals (including bryozoans and siliceous spicules) and mud clasts. Platform carbonates of the Lisburne Group in this area are poorly dated. Armstrong's measured section is -1.5 miles east and on strike and is dated as "possibly Meramecian" based on megafossils. This sample is from the top of exposed Lisburne and is separated by a covered interval of -50 m from subcrop of Siksikpuk Fm. On south side of Lisburne ridge, -2170 ft elevation and ~0.5 mile east of east fork of Blankenship Creek; NE1/4NW1/4 sec. 31, T. 9 S., R. 20 W.
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56 Pa Bispathodus utahensis Sandberg and Gutschick
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Cavusgnathus unicornis Youngquist & Miller
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1 Pa Hindeodus sp. indet.
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1 Pa and 1 S elements Synclydognathus geminus (Hinde)
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UNASSIGNED ELEMENTS: 4 Pb (2 morphotypes), 2 M, 1 Sa, 3 Sc (2 morphotypes)
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79 indet. bar, blade, and platform fragments
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92AD7K
(31769-PC)
, Howard Pass
, Howard Pass C-2. 68°37'30", 136°40'40". Dolostone subcrop in 5-8 cm beds separated by 1 cm-thick layers of darker-weathered dolomitic mud. Lith sample is crinoidal packstone or grainstone. Thin section is too dolomitized for textural analysis but does contain relict crinoids. About 5 m stratigraphically below 92AD7I.
Same locality as above ("referring to 92AK7I").
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15 Pa Bispathodus utahensis Sandberg and Gutschick
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7 Pa Cavusgnathus unicornis Youngquist & Miller
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2 Pa Hindeodus sp. indet.
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440 indet. bar, blade, and platform fragments
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92AD15-0.75
, Howard Pass
, Howard Pass B-5. 68°23'15", 158°51'40. Peloidal lime grainstone with fenestral fabric.
Collected as youngest sample; 0.75 m below top of of 80+m-thick, well exposed measured section (at least 20 m of rubble below lowest exposure and 10 m of rubble crop above highest exposure) in unnamed Devonian unit. Whole section looks very shallow water: Amphipora lagoonal sections, tidal flats, rare storm beds and redbeds.
From southwest side of NNW-trending hill from -500 m to -580 m elevation; -0.75 mile due east of Buccaneer Creek and -1.5 miles due west of Primus Creek, NE1/4SW1/4 sec 23, T. 12 S., R. 30 W.
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92AD15-1.0
, Howard Pass
, Howard Pass B-5. 68°23'15", 158°51'40. Amphipora-ostracode lime wackestone. Collected from 1.0 m below top of measured section (0.25 m below 92AD15-0.75).
From same locality above ("referring to 92AD15.075").
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1 unassigned M? element fragment
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92AD15-25
, Howard Pass
, Howard Pass B-5. 68°23'15", 158°51'40. Massive Amphiopora-ostracode lime wacke-packstone. Collected from 25 m below top of measured section (24 m below 92AD15-1.0).
From same locality as above ("referring to 92AD15-0.75").
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92AD15-51.1
, Howard Pass
, Howard Pass B-5. 68°23'15", 158°52'00. Peloidal grainstone in 2.5 cm-thick beds.
Collected as oldest sample; 51.1 m below top of measured section (26.1 m below 92AD5-25).
From same locality as above ("referring to 92AD15-0.75").
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92AD16-27.6
(32417-PC)
, Howard Pass
, Howard Pass C-2. 68°37'24", 156°37'05". Measured section of Lisburne Group at Lisburne Ridge. Relatively rare platform facies of Lisburne. Previously poorly dated by megafossils. 0 = base of section (oldest) and 305 - top of section (youngest). Siksikpuk exposed - top at 92AD7, - 1.5 miles NW. The oldest and youngest interpretation holds if structure is homoclinal. Some geologists interpret the structure as an anticline. If an anticline, then 27.6 and 136 could be the same age a 295.
Buff-weathering, dark-brownish-gray, fetid dolostone with possible bryozoan wackestone original texture; 30-70% chert, irregular to laminoid. Section begins on NE side of ridge, -650 m traverses -N30°E to SW side of ridge, -700 m. High point crossed is 813 m. About 1 mile due east of east Fork of Blankenship Creek; SW1/4 sec. 32, T. 9 S., R. 20 W.
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Bispathodus utahensis Sandberg and Gutschick
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3 P element fragments Kladognathus sp. indet.
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Synclydognathus sp. indet.
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140 indet. bar, blade, and platform fragments
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92AD16-136
(32418-PC)
, Howard Pass
, Howard Pass C-2. 68°37'24", 156°37'05". Same lithology as above ("referring to 92AD16-27.6"). Measured section of Lisburne Group at Lisburne Ridge. Relatively rare platform facies of Lisburne. Previously poorly dated by megafossils. 0 = base of section (oldest) and 305 - top of section (youngest). Siksikpuk exposed - top at 92AD7, - 1.5 miles NW. The oldest and youngest interpretation holds if structure is homoclinal. Some geologists interpret the structure as an anticline. If an anticline, then 27.6 and 136 could be the same age a 295.
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1 Pa element fragment Bispathodus sp. indet.
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1 Sc element Kladognathus sp. indet.
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28 indet. bar, blad, and platform fragments
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92AD16-140
(32419-PC)
, Howard Pass
, Howard Pass C-2. 68°37'24", 156°37'05". Partially silicified dolomite with bryozoan and crinoid wackestone-packstone texture. Measured section of Lisburne Group at Lisburne Ridge. Relatively rare platform facies of Lisburne. Previously poorly dated by megafossils. 0 = base of section (oldest) and 305 - top of section (youngest). Siksikpuk exposed - top at 92AD7, - 1.5 miles NW. The oldest and youngest interpretation holds if structure is homoclinal. Some geologists interpret the structure as an anticline. If an anticline, then 27.6 and 136 could be the same age a 295.
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5 Pa element fragments Bispathodus sp. indet.
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2 Pa cavusgnathoid element fragments
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61 indet. bar, blade, and platform fragments
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92AD16-160.5
(32420-PC)
, Howard Pass
, Howard Pass C-2. 68°37'24", 156°37'05". Measured section of Lisburne Group at Lisburne Ridge. Relatively rare platform facies of Lisburne. Previously poorly dated by megafossils. 0 = base of section (oldest) and 305 - top of section (youngest). Siksikpuk exposed - top at 92AD7, - 1.5 miles NW. The oldest and youngest interpretation holds if structure is homoclinal. Some geologists interpret the structure as an anticline. If an anticline, then 27.6 and 136 could be the same age a 295. 10 cm-thick bedded dolomite with muddy interlayers, crinoids and no chert in 10-cm beds with muddy interlayers.
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21 Pa elements Bispathodus utahensis Sandberg and Gutschick (mostly incomplete)
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2 Pa elements Cavusgnathus unicornis Youngquist & Miller
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126 indet. bar, blade, and platform fragments
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92AD16-176
(32421-PC)
, Howard Pass
, Howard Pass C-2. 68°37'24", 156°37'05". Measured section of Lisburne Group at Lisburne Ridge. Relatively rare platform facies of Lisburne. Previously poorly dated by megafossils. 0 = base of section (oldest) and 305 - top of section (youngest). Siksikpuk exposed - top at 92AD7, - 1.5 miles NW. The oldest and youngest interpretation holds if structure is homoclinal. Some geologists interpret the structure as an anticline. If an anticline, then 27.6 and 136 could be the same age a 295. Same lithology as above ("referring to 92AD16-160.5").
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23 Pa elements Bispathodus utahensis Sandberg and Gutschick (mostly incomplete)
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2 Pa elements Cavusgnathus unicornis Youngquist and Miller
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1 Pa cavusgnathoid fragment
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141 indet. bar, blade, and platform fragments
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92AD16-227
(31771-PC)
, Howard Pass
, Howard Pass C-2. 68°37'24", 156°37'05". Measured section of Lisburne Group at Lisburne Ridge. Relatively rare platform facies of Lisburne. Previously poorly dated by megafossils. 0 = base of section (oldest) and 305 - top of section (youngest). Siksikpuk exposed - top at 92AD7, - 1.5 miles NW. The oldest and youngest interpretation holds if structure is homoclinal. Some geologists interpret the structure as an anticline. If an anticline, then 27.6 and 136 could be the same age a 295. Same lithology as above ("referring to 92AD16-160.5").
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15 Pa element fragments Bispathodus utahensis Sandberg and Gutschick (mostly incomplete)
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1 Pa cavusgnathoid element fragment
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156 indet. bar, blade, and platform fragments
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92AD16-295
(32422-PC)
, Howard Pass
, Howard Pass A-2. 68°37'00", 156°37'50". Measured section of Lisburne Group at Lisburne Ridge. Relatively rare platform facies of Lisburne. Previously poorly dated by megafossils. 0 = base of section (oldest) and 305 - top of section (youngest). Siksikpuk exposed - top at 92AD7, - 1.5 miles NW. The oldest and youngest interpretation holds if structure is homoclinal. Some geologists interpret the structure as an anticline. If an anticline, then 27.6 and 136 could be the same age a 295. Dolomite thinly interbedded with chert.
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1 Pa element cavusgnathid fragment
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2 unassigned M element fragments
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110 relatively small indet. bar, blade, and platform fragments
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92AD17B
, Howard Pass
, Howard Pass A-2. 68°12'00", 156°48'50". Medium-dark-gray, very light- to light-gray-weathering lime mudstone with 5-10% fenestral fabric and containing a small percent of calcispheres and ostracodes. Collected from unnamed Devonian(?) unit.
Collected at -800 m elevation on northeast side of hill 820+ m, -2 miles SW of Howard Hills, 1.5 miles due north of Flora Creek, -2miles SE of Nigtun Lake; SE1/4NE1/4 sec. 4, T. 32 N., R. 9 E.
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92AD19A
, Howard Pass
, Howard Pass A-2. 68°12'05", 156°49'30". 4 cm-thick storm bed(?) of calcareous sandstone with coral fragments. Collected as stratigraphically older(?) than 92AD17B in unnamed Devonian(?) unit. Collected more or less on trend with 92AD17B, at -700 m elevation on west side of hill 820+ m, -0.25 mile west (and slightly north) of 92AD17B.
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92AD18A
(32423-PC)
, Howard Pass
, Howard Pass A-2. 68°12'45", 156°49'50". Irregular 5-10 cm-thick bedded, medium-light-gray, light-gray weathering skeletal limestone packstone locally containing brachiopods, horn corals and abundant crinoids.
Collected from unnamed Mississippian fossiliferous limestone "Ml" unit 10 km north of contact with overlying Kuna Formation (possibly several meters stratigraphically below contact). Rocks exposed as rubble/subcrop- so thicknesses of units uncertain. Unit widespread in this area.
Collected from northern part of NW-trending low ridge at -600m elevation, -mile SE of Nigtun Lake, -2 miles S-SW of akulnik Lake; SW1/4SE1/4 sec. 32, T. 33 N., R. 9 E.
May be equivalent to 91AD9F and 92AD24G.
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Bispathodus aculeatus plumulus (Rhodes, Austin and Druce), nodosus morphotype
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2 Pa elements Hindeodus crassidentatus (Branson and Mehl)
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27 indet. bar, blade, and platform fragments
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92AD18B
(32424-PC)
, Howard Pass
, Howard Pass A-2. 68°12'45", 156°49'50". Medium-dark-gray to black limestone interlayered with black siliceous mudstone and chert.
Collected from limy lens within Kuna Fm. of the Lisburne Group, -50 m south of contact with "Ml" unit.
From same locality as above ("referring to 92AB18A").
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14 Pa elements Bispathodus utahensis Sandberg and Gutschick
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VICARIOUS DIGYRATE ELEMENTS OF OSAGEAN AGE:
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60 indet. bar, blade, and platform fragments
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92AD20-4.5
(32425-PC)
, Howard Pass
, Howard Pass C-3. Lat. 68 deg. 38'10" N., Long. 157 deg. 31'40" W. Platy, dark-brownish-gray, grayish-orange-weathering, fine-grained limestone riddled with tiny burrows; about 4.5 m below top of 42-m-thick section of unit Mlri. Thin section is spiculite; spicules chiefly siliceous (some calcareous) in a fine-grained carbonate matrix containing muddy wisps and burrow fills and minor radiolarians. Sample collected from very fine grained rock (periplatform ooze?) and may contain relatively indigenous faunas. (description from Dover et al., 2004, p. 32 (Table 1)); [Howard Pass C-3. 68°38'10", 157°31'30". Platey, dark-brownish gray, grayish orange-weathering, fine-grained limestone riddled with tiny burrow.
Sample collected from very fine-grained lithology (periplatform ooze?) and may contain more indigenous faunas.
92AD20-4.5 through 92AD22A from 66.5+m thick measured section in sequence of "Ipnavik facies" of Lisburne Group overlain (unconformably?) by Cretaceous sandstone. The section may be cut by faults, but if is not repeated, 92AD20-4.5 should be the youngest, and 92AD22A should be the oldest. ....92AD20-4.5 and -14.5 collected above change in attitude (fault?)
92AD20-4.5,-14.5 and 92AD220-23 collected from -700-660 m elevation on west side of NW-trending ridge, ~2 miles due east of Cutaway Creek and ~2.5 miles due south of headwaters of Lost Temper Creek, western Brooks Range; SW1/4NE1/4 sec. 28, T. 9 S., R. 24 W. (description from Harris E&R report dated March 17, 1995)]
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1 juvenile Pa element Gnathodus texanus Roundy?
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4 indet. bar, blade, and platform fragments
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92AD20-14.5
(32426-PC)
, Howard Pass
, Howard Pass C-3. Lat. 68 deg. 38'10" N., Lat. 157 deg. 31'40" W. Crinoidal lime pack/grainstone (probable gravity flow deposit) about 14.5 m below top of 42-m-thick section. Thin section is crinoidal pack/grainstone with lesser bryozoans, siliceous sponge spicules, ostracodes, gastropods, brachiopod fragments, echinoderm spines, and phosphatic bioclasts; minor noncalcareous mud clasts, glauconite, and dolomite. Sample collected from carbonate turbidites (and thus may contain reworked faunas). (description from Dover et al., 2004, p. 33 (Table 1)); [Howard Pass C-3. 68°38'10" W, 157°31'40". Crinoidal lime grainstone/packstone. Probable gravity flow deposit. Sample collected from carbonate turbidites(may contain reworked faunas?).
92AD20-4.5 through 92AD22A from 66.5+m thick measured section in sequence of "Ipnavik facies" of Lisburne Group overlain (unconformably?) by Cretaceous sandstone. The section may be cut by faults, but if is not repeated, 92AD20-4.5 should be the youngest, and 92AD22A should be the oldest. ....92AD20-4.5 and -14.5 collected above change in attitude (fault?)
92AD20-4.5,-14.5 and 92AD220-23 collected from -700-660 m elevation on west side of NW-trending ridge, ~2 miles due east of Cutaway Creek and ~2.5 miles due south of headwaters of Lost Temper Creek, western Brooks Range; SW1/4NE1/4 sec. 28, T. 9 S., R. 24 W. (description from Harris E&R report dated March 17, 1995)]
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121 Pa elements Bispathodus utahensis Sandberg and Gutschick (all large and fairly complete)
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1 Pa element Doliognathus latus Branson and Mehl
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5 Idioprioniodus sp. indet. element fragments
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17 incomplete Pa elements of Pseudopolygnathus spp.
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7 unassigned robust Pb element of Osagean morphotype
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11 indet. bar, blade, and platform fragments
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REDEPOSITED MIDDLE-LATE KINDERHOOKIAN CONODONTS:
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1 Pa element Polygnathus inornatus E.R. Branson
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2 Pa element fragments Siphonodella sp. indet.
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REDEPOSITED FAMENNIAN CONODONTS
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1 Pa element Palmatolepis sp.
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92AD220-23
(32427-PC)
, Howard Pass
, Howard Pass C-3. Lat. 68 deg. 38'10" N., Long. 157 deg. 31'50" W. Sample from 60-cm-thick graded bed of crinoid-rich limestone about 40 m below top of 42-m-thick section; fault cuts section about 25 m above base. Thin section is skeletal grainstone containing 5-10 percent lithic clast. Bioclasts are 90 percent crinoid ossicles, minor fragments of bryozoans, brachiopods, and ostracodes, and rare echinoderm spines. Lithic clasts include calcareous and siliceous spiculite, lime mudstone, and peloidal-calcisphere pack-grainstone. Sample collected from carbonate turbidites (may contain reworked faunas). (description from Dover et al., 2004, p. 33 (Table 1)); [Howard Pass C-3. 68°38'10", 157°31'50". (description from Harris E&R report dated March 17, 1995)]
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10 Pa elements Bispathodus utahensis Sandberg and Gutschick (all large and partly incomplete)
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2 Pa elements Gnathodus punctatus (Cooper)
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2 Pa elements Polygnathus spp. indet.
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6 incomplete Pa elements of Pseudopolygnathus spp.
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2 M elements of Osagean morphotype
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62 indet. bar, blade, and platform fragments
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92AD22A
(32428-PC)
, Howard Pass
, Howard Pass C-3. Lat. 68 deg. 38'20" N., Long. 157 deg. 32'30" W. Fine-grained limestone with abundant small burrows. Thin section is calcareous peloid spiculite that contains calcispheres and brown mud clasts. Sample collected from very fine grained rock (periplatform ooze?) and may contain relatively indigenous faunas. Probably stratigraphically below samples at locality 27. If fauna is not reworked, this sample and that from locality 52 are the oldest from unit Mlri. (description from Dover et al., 2004, p. 32 (Table 1)); [Fine-grained limestone with abundant small burrows. Sample collected from very fine grained lithology (periplatform ooze?) and may contain more indigenous faunas. (description from Harris E&R report dated March 17, 1995; Shipment no. A-95-3)]; [Howard Pass C-3. 68°38'20", 157°32'30". Fine-grained limestone with abundant small burrows. Sample collected from very fine grained lithology (periplatform ooze?) and may contain more indigenous faunas. (description from Harris E&R report dated Jan. 25, 1995; Shipment no. A-95-3a)] NOTE BY R.B. BLODGETT, NOTE MAJOR AGE DIFFERENCE BETWEEN THE TWO E&R REPORTS
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1 Pa element Bispathodus stabilis (Branson and Mehl) or ......
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....... Bispathodus utahensis Sandberg and Gutschick
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1 Pa element Polygnathus purus Voges
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9 indet. bar, blade, and platform fragments
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92AD23A
, Howard Pass
, Howard Pass B-5. 68°23'34", 158°36'39". Very fine-grained, dark-brownish-gray, slightly recrystallized(?) platy limestone in subcrop. Collected from unnamed carbonate (Dls-Mull) on northwest side of Siniktanneak mafic complex. Collected at -460 m elevation on abandoned (paleo) cutbank, -0.3 km due north of Ulvaksak Creek, -2 1/8 miles due south of Primus Creek; NE1/4NE1/4 sec. 23, T. 12 S., R. 29 W. (description from Harris E&R report dated March 17, 1995; Shipment A-95-3); [Howard Pass B-5. 68°23'34", 158°36'39". Very fine-grained, dark-brownish-gray, slightly recrystallized(?) platy limestone in subcrop. Collected from unnamed carbonate (Dls-Mull) on northwest side of Siniktanneak mafic complex. Collected at -460 m elevation on abandoned (paleo) cutbank, -0.3 km due north of Ulvaksak Creek, -2 1/8 miles due south of Primus Creek; NE1/4NE1/4 sec. 23, T. 12 S., R. 29 W. (description form Harris E&R report dated Jan. 25, 1995; Shipment A-95-3a]
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92AD24G
, Howard Pass
, Howard Pass A-3. 68°12'37", 157°39'55". Dark-gray, medium-light-gray-weathering crinoidal lime packstone in subcrop. Sample collected from Lisburne Group in ~50 m thick unnamed fossil limestone unit ("Ml", =91AD9F?), less than 1 m below contact with overlying Kuna Formation (siliceous black mudstone here).
Collected at ~700 m elevation in saddle on northeast side of a hill with elevation of 740 m+, 1.5 miles east of unnamed northern tributary to Aniuk River, 0.5 mile due north of westernmost tributary (headwaters) to Fauna Creek; SW1/4SW1/4 sec. 35, T. 33 N., R. 5 E.
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6 Pa elements Bispathodus aculeatus plumulus (Rhodes, Austin and Druce)--one is a nodosus morphotype
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7 Pa element fragments Pseudopolygnathus sp. indet.
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1 robust Pa element Polygnathus scobiniformis E.R. Branson
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22 indet. bar, blade, and platform fragments
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92AD24N
, Howard Pass
, Howard Pass A-3. 68°12'37", 157°39'55". Medium-dark-gray, orange pink- to light brown-weathering, sandy skeletal lime packstone with crinoids; in platy, irregular beds with shale partings.
Collected from Endicott Group in limy layer ~2 m below top of Kayak Shale, which directly underlies fossil limestone unit (=91AD9F?)
Collected 100 m north of 92AD24G.
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4 Pa elements Bispathodus aculeatus plumulus (Rhodes, Austin and Druce)--one is nodosus morphotype
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34 indet. bar, blade, and platform fragments
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92AD25E
(12458-SD)
, Howard Pass
, Howard Pass B-4. Lat. 68 deg. 21'00" N., Long. 158 deg. 16'15" W. Nodular, 1- to 2-cm-thick beds of fine-grained skeletal lime wackestone. Thin section is skeletal wacke/packstone; diverse bioclasts include crinoid ossicles (to 3 mm in diameter), various types of algae (including Girvanella sp.), ostracodes, gastropods, calcispheres, echinoid spines, and fragments of stromatoporoids, bryozoans, and trilobites. Matrix is peloidal and locally dolomitized, and contains minor detrital quartz and altered volcanic(?) lithic clasts. Collected from a discrete approx. 10 x 20 m block of unnamed Devonian limestone within Copter Peak basalt unit of Siniktanneyak mafic complex. Corals and stromatoporoids of Frasnian age were previously reported from this locality (table 4; fossil loc. 6 of Nelson and Nelson, 1982). (description from Dover et al., 2004, p. 48 (Table 1)); [Howard Pass B-4. 68°21'04", 158°16'20". Nodular, 1-2 cm-thick beds of fine-grained skeletal lime wackestone.
Collected from a discrete ~ 10 m x 20 m block of unnamed Devonian limestone rocks depositionally(?) associated with Siniktanneak mafic complex.
Collected from southwest side of unnamed tributary to and ~ 1.5 miles northwest of Makpik Creek, and ~3 miles northeast of Siniktanneak Mountain, western Brooks Range; sec. 19, T. 34 N., R. 3 E. (from Harris E&R report dated March 17, 1995; Shipment A-95-3 and Harris E&R report dated Jan. 25, 1995, Shipment A-95-3a)]
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1 posterior Pa element fragment Ancyrodella sp. indet.
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3 Belodella sp. indet. elements
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1 Pa element Palmatolepis hassi Mueller and Mueller?
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1 Pa element fragment Polygnathus aff. Po. evidens Klapper and Lane
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39 Pa elements Polygnathus pacificus Savage and Funai
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27 Pa element fragments Polygnathus spp. indet.
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104 indet. bar, blade, and platform fragments
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92AD25H
(12459-SD)
, Howard Pass
, Howard Pass B-4. Lat. 68 deg. 20'56" N., Long. 158 deg. 16'00" W. Massive, stromatoporoid-crinoidal lime packstone. Thin section is skeletal packstone containing <1 percent angular quartz silt; diverse bioclasts include crinoid ossicles, stromatoporoid fragments and algae(?). Collected from a discrete approx. 10 x 20 m block of unnamed Devonian limestone within Copter Peak basal unit of Siniktanneyak mafic complex. Conodonts of Late Devonian age previously reported from this locality (table 4; fossil locality 7 of Nelson and Nelson, 1982). (description from Dover et al., 2004, p. 49 (Table 1)); [Howard Pass B-4. 68°20'58", 158°16'00". Massive, stromatoporoid-crinoidal lime packstone.
Collected from a discrete ~ 10 m x 20 m block of unnamed Devonian rocks depositionally(?) associated with Siniktanneak mafic complex.
From same locality as above ("referring to 92AD25E"). [description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-30)]
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1 posterior Pa element fragment Ancyrodella sp. indet.
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1 Pa element fragment Polygnathus sp. indet.
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6 indet. bar, blade, and platform fragments
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92AD25R
, Howard Pass
, Howard Pass B-4. 68°20'55', 158°15'50". Sheared, crinoidal, lime wackestone to packstone.
Collected from a discrete ~10m x 20 m block of unnamed Devonian limestone rocks depositionally(?) associated with Siniktanneak mafic complex.
From same locality as above ("referring to 92AD25H"). Collection 79ANS41C from this area, yielded Upper Devonian conodonts and is possibly from the same block as this sample. [description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]
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92AD26D
(32431-PC)
, Howard Pass
, Howard Pass B-5. Lat. 68 deg. 29.6' N., Long. 158 deg. 35.1' W. Probably turbidite; 10-cm-thick, paralle; and cross-laminated, light- to medium-gray-weathering (locally yellow-tan), dark-gray limestone intercalated with black mudstone and chert. Thin section is laminated spiculite that contains roughly equal amounts of calcareous and siliceous spicules. Collected approx. 1.5 m above base of outcrop and 15 m below mafic sill. Heavy-mineral concentrate: chiefly fused clusters of spines and (or) spicules with druses of phosphate. (description from Dover et al., 2004, p. 45 (Table 1)); [Howard Pass B-4. 68°29.57', 158°35.17'. Probable turbidite; 10 cm-thick, parallel and cross laminated, dark-gray, light to medium gray-weathering (locally yellow-tan) limestone intercalated with black mudstone and chert.
Collected as "Ipnavik facies" of Lisburne Group, ~1.5 m above base of outcrop and 15 m below mafic sill.
Collected ~4000 ft. (~ 1250 m) elevation on north side of hill 1301 m, ~1.5 miles due east of Wager Creek and ~0.5 mile west of headwaters of Twister Creek, NE1/4 sec. 13, T. 11 S., R. 29 W. (from Harris E&R report dated March 17, 1995)]
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2 Pb and 1 Sc elements Bactrognathus? sp. indet.
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3 Pa element Hindeodus crassidentatus (Branson and Mehl)
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23 indet. bar, blade, and platform fragments
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92AD28A-22
(12460-SD)
, Howard Pass
, Howard Pass B-5. Lat. 68 deg. 29'43" N., Long. 158 deg. 35'00" W. Skeletal lime grainstone lenses containing crinoid ossicles and bryozoans. Thin section is skeletal packstone with locally well developed geopetal fabric and minor peloids. Divers bioclasts include crinoid ossicles, foraminifers, and fragments of bryozoans, brachiopods, gastropods, and ostracodes; many bioclasts are micritized. Collected from locally youngest(?) part of unnamed Devonian limestone; 130 m of total section exposed here and at loc. 73. Heavy-mineral concentrate includes phosphatic brachiopod fragments, phosphatized bryozoan and gastropod fragments, and conodont pearls. (description from Dover et al., 2004, p. 44 (Table 1)); [Howard Pass B-5. 68°29'43", 158°35'00". Skeletal lime grainstone lenses with crinoids and bryozoans.
Collected from locally youngest(?) part of unnamed Devonian limestone.
Collected from easternmost part of east-west segment of NW-trending ridge. ~11.75 miles due east of Wager Creek, ~0.5 mile due west of the headwaters of Twistem Creek, western Brooks Range; N. part sec. 13, T. 11 S., R. 29 W. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]
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4 Neopanderodus sp. elements
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1 Pb Oulodus sp. indet. element
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1 Pa element Polygnathus aff. Po. eifelius Bischoff and Ziegler
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6 Pa elements Polygnathus linguiformis linguiformis Hinde gamma morphotype
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15 Pa elements Polygnathus parawebbi Chatterton
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15 Pa element fragments or juveniles Polygnathus spp. indet.
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26 indet. bar, blade, and platform fragments
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.... 5 gastropod phosphatized steinkerns
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92AD28A-4
(12461-SD)
, Howard Pass
, Howard Pass B-5. Lat. 68 deg. 29'43: N., Long. 158 deg. 35'00" W. Skeletal lime grainstone lenses containing crinoid ossicles. Thin section is crinoidal pack/gainstone with brachiopod and coral fragments, ostracodes, and minor carbonate intraclasts; many bioclasts are micritized. Collected from unnamed Devonian limestone, 18 m stratigraphically below 92AD28A-22. (description from Dover et al., 2004, p. 44 (Table 1)); [Howard Pass B-5. 68°29'43", 158°35'00". Skeletal lime grainstone lenses with crinoids. Collected from unnamed Devonian limestone, 18 m stratigraphically below 92AD28A-22.
From same locality as 92 AD28A-22. (from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]
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5 Neopanderodus sp. elements
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1 Pa Polygnathus linguiformis linguiformis Hinde epsilon morphotype
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10 Pa elements Polygnathus parawebbi Chatterton
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70 indet. bar, blade, and platform fragments
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1 phosphatized gastropod steinkern
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92AD29-8
(12462-SD)
, Howard Pass
, Howard Pass B-5. Lat. 68 deg. 29'43" N., Long. 158 deg. 35'00" W. Sandy(?) dolostone interlayered with chert bands. Thin section is dolostone containing rare relict crinoid ossicles and thin phosphatic shells; dolomite crystals less than or equal to 120 microns. Collected from unnamed Devonian limestone, at least 12 m stratigraphically below 92AD28A-4. (description from Dover et al., 2004, p. 44 (Table 1)); [Howard Pass B-5. 68°29'43", 158°35'05". Sandy(?) dolostone with chert bands. Collected from unnamed Devonian limestone, at least 12 m stratigraphically below 92AD28A-4.
Collected between 92AD44D and 92AD45 on north-south segment of NW-trending ridge, ~1.75 miles due east of Wager Creek, ~0.5 mile due west of the headwaters of Twistem Creek, western Brooks Range; N. part sec. 13, T. 11 S., R. 29 W. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]
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Polygnathus linguiformis linguiformis Hinde
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41 indet. bar, blade, and platform fragments
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92AD30B
(11949-SD, also 12463-SD)
, Howard Pass
, Sample collected on E-W segment of ridge. Partly silicified brachiopod lime packstone. (description from Blodgett E&R report of 5/3/94)[Howard Pass B-5. Lat. 68 deg. 29'43" N., Long. 158 deg. 34'00" W. Partly silicified brachiopod packstone. Thin section is brachiopod packstone containing crinoid ossicles and gastropods; many bioclasts silicified and matrix largely dolomitized. Collected from unnamed Devonian limestone, about 10 m above 92AD28A-4. Brachiopods of early Eifelian age collected from this locality (see table 3). Heavy-mineral concentrate includes 7 gastropod, 1 ostracode, and 3 tentaculitid phosphatized steinkerns. (description from Dover et al., 2004, p. 45 (Table 1))]; [Howard Pass B-5. 68°29'45", 158°35'10". Partly silicified brachiopod packstone. Collected from unnamed Devonian limestone, about 10 m above 92AD29-8 and slightly lower(?) than 28A-4.
Collected to the west of 92AD28A-4 and -22. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3).]
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Polygnathus linguiformis linguiformis Hinde gamma morphotype
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3 Pa element fragments Polygnathus sp. indet.
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10 indet. bar, blade, and platform fragments
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10 phosphatized gastropod steinkerns
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1 phosphatized ostracode steinkern
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3 phosphatized tentaculitid steinkerns
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92AD44D
, Howard Pass
, Howard Pass B-5. 68°29'50", 158°35'28". Skeletal lime packstone-wackestone. Collected from unnamed Devonian limestone, stratigraphically equivalent(?) to 92AD44D and 45C, but in different(?) facies.
Collected south of 92AD45, on north-south segment of NW-trending ridge, ~1.75 miles due east of Wager Creek, ~0.5 mile due west of the headwaters of Twistem Creek, western Brooks Range; SE1/4SW1/4 sec. 12, T. 11 S., R. 29 W. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment A-95-3a) and March 17, 1995 (Shipment A-95-3).
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92AD45B
(USGS loc. 11950-SD, also 12464-SD)
, Howard Pass
, Both samples (92AD45B, 45C) collected along N-S segment of ridge. From a dolomitic brachiopod packstone. (description from Blodgett E&R report of 5/3/94) [Howard Pass B-5. Lat. 68 deg. 29'57" N., Long. 158 deg. 35'35" W. Dolomitic brachiopod packstone. Thin section is dolomite crystal mosaic containing a few silicified bioclasts, including probable brachiopod fragments and crinoid ossicles. Collected from unnamed Devonian limestone, stratigraphically equivalent to 92AD45C but in different facies. These rocks stratigraphically underlie strata at loc. 74; approx. 130 m of total section exposed at the two localities. Heavy-mineral concentrate is chiefly phosphatic brachiopod fragments. Brachiopods of early Eifelian age collected from this locality (see table 3). (description from Dover et al., 2004, p. 43 (Table 1))]; [92AD45B. USGS loc. 12464-SD. Howard Pass B-5. 68°29'58", 158°35'32". Dolomitic brachiopod packstone. Collected from unnamed Devonian limestone, stratigraphically equivalent(?) to 92AD44D and 45C, but in different(?) facies.
Collected north of 92AD44D. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]
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140 Belodella devonica (Stauffer) elements
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Polygnathus parawebbi Chatterton
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46 indet. bar, blade, and platform fragments
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92AD45C
(USGS loc. 11951-SD, also 12465-SD)
, Howard Pass
, Both samples (92AD45B, 45C) collected along N-S segment of ridge. From a limey brachiopod packstone. (description from Blodgett E&R report of 5/3/94) [Howard Pass B-5. Lat. 68 deg. 29'57" N., Long. 158 deg. 35'35" W. Limey brachiopod packstone. Thin section is brachiopod-crinoid wackestone; matrix dolomitized and bioclasts largely silicified. Collection from an unnamed Devonian limestone, stratigraphically equivalent(?) to 92AD45B, but in different facies. Brachiopods of early Eifelian age collected from this locality (see table 3). (description from Dover et al., 2004, p. 43 (Table 1))]; [92AD45C. USGS loc. 12465-SD. Howard Pass B-5. 68°29'58", 158°35'32". Limy brachiopod packstone. Collected from unnamed Devonian limestone, stratigraphically equivalent(?) to 92AD44D and 45B, but in different(?) facies. Collected north of 92AD44D. (description from Harris E&R reports dated Jan. 25, 19995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-93-3)]
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Polygnathus parawebbi Chatterton
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3 Pa element fragments Polygnathus sp. indet. (but not Po. parawebbi)
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24 indet. bar, blade, and platform fragments
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92AD32A
(32432-PC)
, Howard Pass
, Howard Pass C-3. Lat. 68 deg. 30'40" N., 157 deg. 30'55" W. Buff-weathering, very fine-grained dolostone intercalated with black siliceous mudstone; uppermost part of unit Mlb. Stratigraphically above strata at loc. 71; equivalent to, or slightly stratigraphically below, strata at loc. 58. Thin section is fine-crystalline dolostone, with lenses of chert that contain siliceous sponge spicules and lesser radiolarians. (description from Dover et al., 2004, p. 43 (Table 1); [Howard Pass C-3. 68°30'40", 157°30'55". Buff-weathering, very fine-grained dolostone intercalated with black shale.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18).
Collected from the saddle at top of Mt. Bupto, between peak 159 m to the north and a peak 1220+ m to the southeast; N. part NE1/4 sec. 9, T. 11 S., R. 24 W. (description from Harris E&R report dated March 17, 1995)]
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All conodonts are partly to extensively coated with organic grunge
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1 Pa element Bispathodus utahensis Sandberg and Gutschick
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4 Pa elements Gnathodus texanus Roundy
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107 indet. bar, blade, and platform fragments
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92AD33-0.2
(32433-PC)
, Howard Pass
, Howard Pass C-3. Measured section extends from 68 deg. 30'40"/157 deg. 31'00" (top) to 68 deg. 30'32"/157 deg. 31'34" (base). Samples at this locality from a 165-m-thick measured section of unit Mlb (upper part); on trend with (and 0.25 mi south of ) section measured by Armstrong (1970). Sample from 3-m-thick interval of >80 percent chert. Collected from less cherty, uppermost 0.5 m of dolostone in 5- to 8-cm-thick beds interlayered with cherty bands (10-15 percent) that preserve crinoidal pack/grainstone texture. Thin section is dolomitized crinoidal packstone. Collected 0.2 m below top of measured section; approx. 30 m below top of unit Mlb. Heavy mineral concentrate: chiefly fluorite, phosphatic brachiopod fragments, conodonts, and lesser ichthyoliths. Section contains brachiopods and rugose corals of late Osagean or Meramecian age, and colonial corals (Lithostrotion (Siphonodendron) sinuosum (Kelly)) and endothyrid foraminifers of Meramecian age (Armstrong, 1970, 1975). (description from Dover et al., 2004, p. 41 (Table 1)). [Howard Pass C-3. 68°30'43", 157°31'00". Sample from 3 m-thick interval of >80% chert. Collected from less cherty, uppermost 0.5 m of 5-8 cm-thick beds of dolostone with 10-15% cherty bands preserving crinoidal packstone-grainstone texture.
Collected from 0.2 m below top of measured section.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18). 92AD33-0.2 to -120 from 1240 m and 1100 m elevation of continuously exposed chert and dolostone along trend with measured section of Gus Armstong (<0.25 mile due north), who suggested an age of Meramecian (based on silicified colonial corals and forams) for the upper 100 m (at least) of section (see Armstrong, AAPG Bulletin, v. 54, p. 251+, 1970); N part NE1/4 sec. 9, T. 11 S., R. 24 W, lat. 68°30'43" to 68°30'37", long. 157°31'00" to 20", Howard Pass C-3 quadrangle. (description from Harris E&R report dated March 17, 1995)]
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This is an extremely abudant sample; only part of the +60 mesh nonmagnetic heavy-mineral concentrate was picked.
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Bispathodus utahensis Sandberg and Gutschick
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2 incomplete Pa elements Embsaygnathus sp. indet.
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1 juvenile Pa element Gnathodus sp. indet.
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Hindeodus cristulus (Youngquist and Miller)
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Idioprioniodus conjunctus (Gunnell)
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Kladognathus tenuis (Rexroad)
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Synclydognathus geminus (Hinde)
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34 Pa Vogelgnathus postcampbelli (Austin and Husri)
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3 Pb (2 morphotypes), 2 Sc
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+200 indet. bar, blade, and platform fragments
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92AD33-30
(32434-PC)
, Howard Pass
, Howard Pass C-3. Measured section extends from 68 deg. 30'40"/157 deg. 31'00" (top) to 68 deg. 30'32"/157 deg. 31'34" (base). Sample from 60-cm-thick massive bed (with irregular laminae due to silicified bioclasts) of fetid dolostone containing hydrocarbon-filled vugs and 5- to 10 percent chert nodules preserving skeletal (including crinoidal) wackestone and packstone textures. Thin section is dolomite crystal mosaic containg 10-15 percent elongate vugs, some of which are lines with solid hydrocarbons. Collected 30 m below top of measured section. (description from Dover et al., 2004, p. 42 (Table 1)) [Howard Pass C-3. 68°30'43", 157°31'00". 60 cm-thick massive bed (with irregular laminae due to silicified skeletals) of fetid dolostone with hydrocarbon filled vugs and 5-10% chert nodules preserving skeletal (including crinoidal) wackestone and packstone texture. Collected from 30.2 m below top of measured section.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18). 92AD33-0.2 to -120 from 1240 m and 1100 m elevation of continuously exposed chert and dolostone along trend with measured section of Gus Armstong (<0.25 mile due north), who suggested an age of Meramecian (based on silicified colonial corals and forams) for the upper 100 m (at least) of section (see Armstrong, AAPG Bulletin, v. 54, p. 251+, 1970); N part NE1/4 sec. 9, T. 11 S., R. 24 W, lat. 68°30'43" to 68°30'37", long. 157°31'00" to 20", Howard Pass C-3 quadrangle. (description from Harris E&R report dated March 17, 1995)]
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10 Pa elements Cavusgnathus unicornis Youngquist and Miller
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Bispathodus utahensis Sandberg and Gutschick
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Kladognathus tenuis (Rexroad)
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1 Pa Synclydognathus geminus (Hinde)
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201 indet. bar, blade, and platform fragments
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92AD33-61.5
(32435-PC)
, Howard Pass
, Howard Pass C-3. Measured section extends from 68 deg. 30'40"/157 deg. 31'00" (top) to 68 deg. 30'32"/157 deg. 31'34" (base). Sample from 50-cm-thick bed of dolostone immediately underlying chert that has crinoidal grainstone texture. Thin section is dolomite-crystal mosaic containing a few relict crinoid ossicles and having 50-10 percent chiefly intercrystalline porosity. Collected 61.5 m below top of measured section. (description from Dover et al., 2004, p. 42 (Table 1)).
[Howard Pass C-3. 68°30'43", 157°31.00". 50 cm-thick bed of dolostone immediately underlying chert with crinoidal grainstone texture.
Collected from 61.7 m below top of measured section.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18). 92AD33-0.2 to -120 from 1240 m and 1100 m elevation of continuously exposed chert and dolostone along trend with measured section of Gus Armstong (<0.25 mile due north), who suggested an age of Meramecian (based on silicified colonial corals and forams) for the upper 100 m (at least) of section (see Armstrong, AAPG Bulletin, v. 54, p. 251+, 1970); N part NE1/4 sec. 9, T. 11 S., R. 24 W, lat. 68°30'43" to 68°30'37", long. 157°31'00" to 20", Howard Pass C-3 quadrangle. (description from Harris E&R report dated March 17, 1995)]
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Mostly broken conodonts--all the +60 mesh heavy-mineral concentrate was picked, but only 40 trays of the 60-100 mesha fraction was picked
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Bispathodus utahensis Sandberg and Gutschick
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16 small Pa element fragments Bispathodus utahensis Sandberg and Gutschick?
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41 indet. bar, blade, and platform fragments
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92AD33-91
(32436-PC)
, Howard Pass
, Howard Pass C-3. Measured section extends from 68 deg. 30'40"/157 deg. 31'00" (top) to 68 deg. 30'32"/157 deg. 31'34" (base). Sample from 30 cm x 2 m-long lens of dolostone within chert that has crinoidal-skeletal packstone-grainstone texture. Thin section is dolomite crystal mosaic that contains a chert lens displaying relict bioclasts (chiefly crinoid ossicles). Collected 91 m below top of measured section. Heavy-mineral concentrate is chiefly fluorite. (description from Dover et al., 2004, p. 42 (Table 1)).
[Howard Pass C-3. 68°30'43", 157°31'00". 30 cm x 2 m-long lens of dolostone within chert with crinoidal-skeletal packstone-grainstone texture. Collected from 91.2 m below top of measured section.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18). 92AD33-0.2 to -120 from 1240 m and 1100 m elevation of continuously exposed chert and dolostone along trend with measured section of Gus Armstong (<0.25 mile due north), who suggested an age of Meramecian (based on silicified colonial corals and forams) for the upper 100 m (at least) of section (see Armstrong, AAPG Bulletin, v. 54, p. 251+, 1970); N part NE1/4 sec. 9, T. 11 S., R. 24 W, lat. 68°30'43" to 68°30'37", long. 157°31'00" to 20", Howard Pass C-3 quadrangle. (description from Harris E&R report dated March 17, 1995)]
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2 P element fragments Eotaphrus burlingtonensis Pierce and Langenheim
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41 indet. bar, blade, and platform fragments
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92AD33-120
(32437-PC)
, Howard Pass
, Howard Pass C-3. Measured section extends from 68 deg. 30'40"/157 deg. 31'00" (top) to 68 deg. 30'32"/157 deg. 31'34" (base). Sample from 50-cm-thick bed of fetid dolostone containing relict crinoids and solid hydrocarbons in vugs. Thin section is dolomite crystal mosaic that contains rare relict crinoid ossicles. Collected 120 m below top of measured section. Heavy-mineral concentrate is chiefly fluorite. (description from Dover et al., 2004, p. 42 (Table 1));
Howard Pass C-3. 68°30'37", 157°31'20". 50-cm thick bed of fetid dolostone with relict crinoids and hydrocarbons in vugs. Collected from 120.2 m below top of measured section.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18). 92AD33-0.2 to -120 from 1240 m and 1100 m elevation of continuously exposed chert and dolostone along trend with measured section of Gus Armstong (<0.25 mile due north), who suggested an age of Meramecian (based on silicified colonial corals and forams) for the upper 100 m (at least) of section (see Armstrong, AAPG Bulletin, v. 54, p. 251+, 1970); N part NE1/4 sec. 9, T. 11 S., R. 24 W, lat. 68°30'43" to 68°30'37", long. 157°31'00" to 20", Howard Pass C-3 quadrangle. (description from Harris E&R report dated March 17, 1995)]
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3 incomplete Pa elements Polygnathus communis communis Branson and Mehl
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2 Sb-Sc element fragments Kladognathus sp. indet.
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4 indet. bar, blade, and platform fragments
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92AD49A
(32438-PC)
, Howard Pass
, Howard Pass C-3. Lat. 68 deg. 30'55" N., Long. 157 deg. 31'45" W. Sample from 5-15 cm-thick layers and lenses of dolostone intercalated with similarly thick layers and lenses of chert showing skeletal wackestone to packstone texture. Thin section is dolomite crystal mosaic containing rare relict crinoid ossicles and spicules. Collected from lowest outcrop of dolostone and chert, approx. 155 m below 92AD-120 (loc. 71) and approx. 320 m below the top of unit Mlb. Heavy mineral concentrate is chiefly fluorite. (description from Dover et al., 2004, p. 39 (Table 1));
Howard Pass C-3. 68°30'55", 157°31'45". 5-15 cm-thick layers and lenses of dolostone intercalated with similarly thick layers and lenses of chert bands showing skeletal wackestone to packstone texture. Collected from lowermost outcrop of dolostone and chert, ~120m(?) stratigraphically below base of 92AD33 measured section and >140 m below 92AD33-120.
Collected at ~1020 m elevation/ ~0.5 mile due north of base of measured section (92AD33) and due east of 92AD47; center sec. 4, T. 11 S., R. 24 W. (description from Harris E&R report dated March 17, 1995).
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3 Pa elements (incomplete) Bispathodus utahensis Sandberg and Gutschick or .....
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....... Bispathodus stabilis (Branson and Mehl)
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3 Sb-Sc element fragments Kladognathus sp. indet.
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19 indet. bar, blade, and platform fragments
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92AD47A
(32439-PC)
, Howard Pass
, Howard Pass C-3. Lat. 68 deg. 30'53" N., Long. 157 deg. 32'00" W. Sample from 5-cm-thick unulatory beds of lime crinoidal packstone-grainstone with millimeter-thick shaly partings. Thin section is crinoidal grainstone along with minor dolomite and chert. Collected approx. 20 m stratigraphically below 92AD49A (loc. 68) and approx. 340 m below the top of the Mlb unit. Heavy-mineral concentrate includes gastropod steinkerns. (description from Dover et al., 2004, p. 38 (Table 1));
[Howard Pass C-3. 68°30'53", 157°32'00". 5 cm-thick undulatory beds of lime crinoidal packstone-grainstone with mm-thick shaly partings.
Collected ~2- stratigraphically below 92AD49A.
Collected at ~940 m elevation, due west of 92AD49; center sec. 4, T. 11 S., R. 24 W.
Armstrong suggested an age of late Osagean or Meramecian (based on brachiopods and corals) for 47A and 47E lithologies, slightly (few 100 m) south of this locality. (description from Harris E&R report dated March 17, 1995)]
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3 Pa elements (incomplete) Bispathodus utahensis Sandberg and Gutschick .....
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...... or Bispathodus stabilis (Branson and Mehl)
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14 Pa elements Polygnathus communis communis Branson and Mehl
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21 indet. bar, blade, and platform fragments
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92AD47E
(32440-PC)
, Howard Pass
, Howard Pass C-3. Lat. 68 deg. 30'53" N., Long. 157 deg. 32'00" W. Thin (4- to 8-cm thick), nodular-bedded to evenly bedded, skeletal (crinoidal-bryozoan?) lime pack/grainstone with local shaly partings. Thin section is partly silicified skeletal supportstone; bioclasts include abundant crinoid ossicles, brachiopod and bryozoan fragments, and siliceous sponge spicules. Collected at the lowest exposed beds here, approx. 20 m stratigraphically below 92AD47A and approx. 360 m below the top of unit Mlb. (description from Dover et al., 2004, p. 38 (Table 1));
[Howard Pass C-3. 68°30'53", 157°32'00". 4-8 cm-thick, nodular- to even-bedded, skeletal (crinoidal-bryozoan?) lime packstone-grainstone with local shaly partings.
Collected at the lowest exposed beds here, ~20 m stratigraphically below 92AD47A.
Collected at ~900 m elevation at same locality as above. (description from Harris E&R report dated March 17, 1995)]
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16 Pa elements (mostly incomplete) Bispathodus utahensis Sandberg and Gutschick .....
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..... or Bispathodus stabilis (Branson and Mehl)
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48 Pa elements Polygnathus communis communis Branson and Mehl (small juveniles to adults)
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48 indet. bar, blade, and platform fragments
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92AD31G
(31768-PC)
, Howard Pass
, Howard Pass C-2. 68°37'58", 156°43'45". 3-5 cm-thick beds of finely crystalline, dark-brown to black, beige-weathering, fetid dolostone with bands and nodues of black chert that preserve skeletal packstone/grainstone texture. Overlies ~ 1 m of black shale and phosphatic pisoids. Collected from top (or very near top) of Lisburne Group and is ~coeval?) with 92AD71 and 92AD16-295.
Collected at ~620 m elevation, on eastern side of western segment of Lisburne Ridge, ~ 1/3 mile due west of Blankenship Creek and ~2.5 miles due east of Hardway Creek; NE1/4SE1/4 sec. 28, T. 9 S., R. 20 W. (description from Harris E&R report dated March 17, 1995).
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All conodonts are partly coated with organic grunge. Only the 60+mesh fraction was partly picked.
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5 Pa elements Bispathodus utahensis Sandberg and Gutschick
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57 Pa (mostly incomplete) elements Cavusgnathus unicornis Youngquist and Miller
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32 Pa elements Gnathodus pseudosemiglaber Thompson and Fellows
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Idioprioniodus sp. indet.
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1 Pa element Synclydognathus geminus (Hinde)
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21 indet. bar, blade, and platform fragments
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92AD35AA
(32441-PC)
, Howard Pass
, Howard Pass B-3. Lat. 68 deg. 19'15" N., Long. 157 deg. 44'10" W. Sample from 4- to 10-cm-thick beds of dark- to medium-dark-gray limestone (calcitized radiolarite?). Thin section is dark, finely intergrown carbonate and silica containing locally abundant brown clasts of noncalcareous mud and scattered, variously preserved radiolarians (some calcite replaced, some pyritized, and some filled with chalcedony). Collected at type locality of Kuna Formation (as designated in Mull and others, 1982); from small outcrop at stream level approx. 15 m west and 12 m topographically lower than base of 92AD35A measured section. If 92AD35AA strata are in place, they are the lowest exposure at the type locality. (description from Dover et al., 2004, p. 50 (Table 1));
[Howard Pass B-3. 68°12'30", 157°44'10". 4-10 cm-thick beds of dark- to medium-dark-gray limestone (calcitized radiolarite?). Collect type section (as designated in 1982 AAPG Bulletin article) of Kuna Fm. of Lisburne Group; from small outcrop right at stream level ~15 m west and 12 m topographically lower than base of 92AD35A measured section (if it is in place, it is the lowest part of section).
Collected from north side of unnamed tributary at headwaters of Safari Creek. ~ 1/3 mile east of main branch of creek and ~2.5 miles west of headwaters of Ipnavik River; NW1/4 sec. 21, T. 34 N., R. 25 W. (description from Harris E&R report dated March 17, 1995)]
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Organic matter invades or partly covers all conodonts, consequently CAI difficult to determine.
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Bispathodus utahensis Sandberg and Gutschick (juveniles and adults)
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30 Pa elements (adults and juveniles) Gnathodus semiglaber Bischoff
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20 bar fragments (moderately large) "Hindeodella" segaformis Bischoff s.f.
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Digryate apparatus elements
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70 indet. bar, blade, and platform fragments
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92AD35A-9A
(31781-PC)
, Howard Pass
, Howard Pass B-3. Lat. 68 deg. 19'15" N., Long. 157 deg. 44'10" W. Sample from 40 x 90-cm concretion of black limestone (calcitized radiolarite?) in fissile black shale. Thin section is calcareous radiolarian packstone; radiolarian tests (replaced and filled with calcite), lesser calcareous sponge spicules, and locally abundant brown clasts of mud and phosphate in a matrix of brown mud. Radiolarians and spicules make up approx. 70-80 percent of slide. Collected 9 m above base of 25-m-thick partial section (92AD35A) of Kuna Formation at type locality. Some conodonts from this sample are figured and described in Dumoulin and others (1994, fig. 3C-G). (description from Dover et al., 2004, p. 50 (Table 1));
[Howard Pass B-3. 68°12'30", 157°44'10". 40 x 90 cm concretion of black limestone in fissile black shale (calcitized radiolarite?). Collected 9 m above base of 35AA measured section at type Kuna Fm. section.
Some conodont from this sample are described in Dumoulin and Harris (1993).
From same locality as above ("referring to 92AD35AA"). (description from Harris E&R report dated March 17, 1995)]
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Organic matter invades or partly covers all conodonts, consequently CAI difficult to determine. Collection extremely abundant, only partly picked.
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Bispathodus utahensis Sandberg and Gutschick
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3 Pa elements Doliognathus latus Branson and Mehl morphotype 3
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9 Pa elements Polygnathus communis communis Branson and Mehl
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1 Pa element Protognathodus cordiformis Lane, Sandberg, and Ziegler
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Scaliognathus anchoralis Branson and Mehl
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174 (moderate to very long bar fragments--Sa, Sb and Sc elements) "Hindeodella" segaformis Bischoff s.f.
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22 indet. bar, blade, and platform fragments
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92AD35C-15.5
(32442-PC)
, Howard Pass
, Howard Pass B-3. Lat. 68 deg. 20'00" N., Long. 157 deg. 44'35" W. Sample from 80 x 45 cm concretion of fine-grained, sooty, fetid, black, medium-gray-weathering limestone (calcified radiolarite?). Thin section is calcareous radiolarian packstone; radiolarian tests (50-80 percent of slide; replaced and filled with polycrystalline calcite) and lesser calcareous sponge spicules in a matrix of brown, fine-crystalline calcite. Collected from 15.5 m above base of approx. 68 m-thick section of Kuna Formation at type locality (as designated in Mull and others, 1982); section is mostly silicified mudstone and <10 percent limestone. (description from Dover et al., 2004, p. 49 (Table 1));
[Howard Pass B-3. 68°20'00', 157°44'30". 80 x 40 cm concretion of fine-grained, sooty, fetid, black, medium gray-weathering limestone (calcified radiolarite?). Collected from 15.5 m above base ~68 m-thick type section of Kuna Fm. which is mostly silicified mudstone and <10% limestone.
Collected at ~800 m elevation, ~ 1/4 mile west of 92AD35A section on north side of small tributary to Safari Creek, ~1 mile southeast of hill 950 m and ~2.75 miles due west of headwaters of Ipnavik River, NW1/4 sec. 21, T. 34 N., R. 5 E. (description from Harris E&R report dated March 17, 1995)]
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Organic matter invades or partly covers all conodonts, consequently CAI difficult to determine.
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3 Pa elements Bispathodus utahensis Sandberg and Gutschick
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35 bar fragments (moderately long to short) "Hindeodella" segaformis Bischoff s.f.
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2 Pa elements Gnathodus cuneiformis Mehl and Thomas
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2 Pa elements Polygnathus communis communis Branson and Mehl
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Scaliognathus anchoralis Branson and Mehl
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+130 indet. bar, blade, and platform elements
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92AD35C-62
(31782-PC)
, Howard Pass
, Howard Pass B-3. Lat. 68 deg. 20'02" N., Long. 157 deg. 44'32" W. Fine-grained, dark-gray to black, locally burrowed(?) limestone rubble (possible concretion). Thin section is dark, very fine grained carbonate containing rare, calcite-replaced radiolarians and locally abundant brown clasts of noncalcareous mud. Collected 62 m above base of section and 46.5 m above 92AD35C-15.5; [Howard Pass B-3. 68°20'02", 157°44'32". Fine-grained, dark-gray to black, locally burrowed(?) limestone rubble (possible concretion?).
Collected 62 m above base of section and 46.5 m above 92AD35C-15.5.
From same locality as above ("referring to 92AD35C-15.5"). (description from Harris E&R report dated March 17, 1995)].
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Organic material invades or partly covers all conodonts, consequently CAI difficult to determine.
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Bispathodus utahensis Sandberg and Gutschick
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1 Pa element Gnathodus pseudosemiglaber Thompson and Fellows
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68 indet. bar, blade, and platform elements
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92AD36A
, Howard Pass
, Howard Pass B-3. 68°24'00", 157°27'00". Limey sandstone containing skeletals (possible skeletal packstone/grainstone). Collected from upper and western part of 2-4 m-thick outcrop of Devonian or Mississippian rocks in thrust contact beneath the Memorial Creek volcanic unit.
Collected at ~680 m elevation on the north side of Memorial Creek, ~4.5 miles west of Ipnavik River and ~3.5 miles east of the Headwaters of Bupto Creek. SE1/4SE1/4 sec. 14, T. 12 S., R. 24 W. (description from Harris E&R report dated March 17, 1995).
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92AD36E
, Howard Pass
, Howard Pass B-3. 68°24'00", 157°26'40". 15-30 cm-thick beds of skeletal lime packstone-grainstone>
Collected ~100 m from 92AD36A in the lower and eastern part of outcrop.
From same locality as above ("referring to 92AD36A"). (description form Harris E&R report dated March 17, 1995).
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1 indet. robust conodont(?) crumb
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92AD37D
(32443-PC)
, Howard Pass
, Howard Pass B-3. Lat. 68 deg. 24'00" N., Long. 157 deg. 27'10" W. Sample from carbonate thrust beneath (and locally intercalated with?) basal of unit JDbc. (description from Dover et al., 2004, p. 70 (Table 4)); [Howard Pass B-3. 68°24'00", 157°27'10". Nodular-bedded, skeletal lime packstone-grainstone with abundant crinoids interbedded with calcareous and noncalcareous sandstone.
Collected stratigraphically highest(?) part of 5-10 m-thick exposed section in outer part of dip-slope. Rocks structurally and stratigraphically(?) underlie 92AD36 section (contact (not exposed) may be a fault) and look lithologically similar to Utukok Fm. (Early Mississippian) of the Lisburne Group.
Collected from same locality as above ("referring to 92AD36E") except at ~660 m elevation near stream level at another small outcrop ~100 m to the west of 92AD36 section. (description from Harris E&R report dated March 17, 1995)]
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7 Pa elements Synclydognathus geminus (Hinde)?
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36 Pa elements (mostly incomplete) Polygnathus inornatus Branson
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3 Pa elements Polygnathus longiposticus Branson and Mehl
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46 indet. bar, blade, and platform fragments
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92AD39C
(32444-PC)
, Howard Pass
, Howard Pass C-1. 68°32'18", 156°14'40". 8 cm-thick layer of medium-gray, brown-weathering limestone (calcitized radiolarite?) interlayered with radiolarian chert.
This locality has been mapped by Gil Mull as "Ml", but lithostratigraphy looks more like Etivuluk Group (Lisburne Group). If this is "Ml", it is an unusual lithology.
Collected from high point (~617 m elevation), on north side and west end of EW-trending ridge, ~4.5 miles west of Kutchaurak Creek and ~5.5 miles east of confluence of Nigu and Etivluk rivers; NE1/4NE1/4 sec. 36, T. 10 S., R. 19 W.
A radiolarian sample was also taken at this locality to help constrain age. (description from Harris E&R report dated March 17, 1995)]
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2 Pa element fragments Bispathodus utahensis Sandberg and Gutschick .....
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.... or Bispathodus stabilis (Branson and Mehl)
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7 indet. bar, blade, and platform fragments
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92AD40A
(32445-PC)
, Howard Pass
, Howard Pass B-1. 68°23'45", 156°07'10". 7 cm-thick beds of cross-and parallel-laminated (some laminae partly to toally silicified); medium-gray to brownsih-gray, yellow- to light-gray-weathering limestone containing sponge spicules.
Collected from rubble crop, near top(?)of "Mlsp" unit of Gil Mull (Lisburne Group-spiculitic faces). Collection 90AMu81 (USGS coll. 31724-PC) from ~3 miles to the east yielded middle Osagean with redeposited Kinderhookian conodonts.
Collected at southernmost edge of top of hill ~682 m, ~ 1/2 mile due west of Kutchaurak Creek and ~7.5 miles due east of the Nigu River; SW1/4SE1/4 sec. 16 (on boundary w/ sec. 21), T. 12 S., R. 18 W. (description from Harris E&R report dated March 17, 1995).
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2 Pa element fragments Bispathodus utahensis Sandberg and Gutschick ...
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... or Bispathodus stabilis (Branson and Mehl)
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2 Pa elements Gnathodus semiglaber Bischoff
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4 element fragments of Idioprioniodus sp. indet.
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32 indet. bar, blade, and platform fragments
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92AD41A
(31766-PC)
, Killik River
, Killik River B-5. 68°28'36", 155°42'30". 5-15 cm-thick beds of medium-dark-gray, pale-yellowish-brown weathering dolomitic(?) micrite with sparse skeletals and gray, non- to slightly-calcareous shale partings.
Collected from upper part of Lisburne Group, ~ 1 m below top of exposure, separated by a ~30-50 m-thick covered interval from the top of 90AD59 measured section. Sample should be coeval(?) with 85Asi14-18 (USGS colln. 29892-PC) and younger than 90AD59 samples.
Collected at ~600 m elevation, on south side of westernmost edge of Ivotuk Hills, along north side of unnamed tributary and ~300 m southeast of where it joins Otuk Creek; SW1/3NW1/4 sec. 20, T. 11 S., R. 16 W. (description from Harris E&R report dated March 17, 1995).
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3 indet. bar and blade fragments
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92AD42A
, Howard Pass
, Howard Pass C-4. 68°30'36", 158°05'00'. ~ 10 cm thick bed of sparse skeletal lime wackestone with Amphipora and ostracodes.
Collected from top of 20-30 m-thick section of brownish-gray, even-bedded (beds vary 2-30 cm-thick) lime mudstone to sparse skeletal wackestone in unnamed Devonian limestone (Dls) unit.
Collected from top of highest outcrops exposed on north-trending ridge (high point = 633 m), ~1 mile due south of Kuna River and ~4 miles due west of Story Creek; NE1/4NW1/4 sec. 7, T. 11 S., R. 26 W. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment A-95-3a) and March 17, 1995 (Shipment A-95-3)).
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92AD43D
, Howard Pass
, Howard Pass C-4. Lat. 68 deg. 32'53" N., Long. 158 deg. 06'35" W. Sample from 4-cm-thick, evenly bedded, brownish-gray, peloidal lime grainstone containing possible mud intraclasts. Thin section is peloid-skeletal grainstone with abundant calcispheres and local fenestral fabric. Collected from unnamed Devonian limestone unit (Dl), near base of approx. 20-m-thick section of carbonate mudstone overlying less resistant, approx. 4-m-thick fossiliferous interval. (description from Dover et al., 2004, p. 32 (Table 1)); [Howard Pass C-4. 68°32'52", 158°06'40". 4 cm-thick, even-bedded, brownish-gray peloidal limestone with mud intraclasts(?).
Collected from unnamed Devonian limestone (Dls) unit, near base of ~20-m-thick carbonate mudstone overlying less resistant, ~4-cm-thick fossiliferous unit.
Collected ~2.5 miles north (and slightly west) of 92AD42 (probably part of the same unit), from 40 m+ high prominent white pinnacle of carbonate mudstone, ~1.75 miles due north of Kuna River and ~5 miles west of Story Creek; center sec. 25, T. 10 S., R. 27 W. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]
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11 indet. bar, blade, and platform fragments
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92AD43E
(12466-SD)
, Howard Pass
, Howard Pass C-4. Lat. 68 deg. 32'53" N., Long. 158 deg. 06'35" W. Brownish-gray, grayish-orange-weathering, fossiliferous lime wackestone to packstone containing bryozoans and corals. Forms matrix to abundant large colonial corals of Pragian-Eifelian age (see table 3 for megafossil data). Thin section is coralline pack/wackestone that has a dolomitic matrix. Collected from unnamed Devonian limestone unit (Dl), at about middle of approx. 4-m-thick fossiliferous interval underlying carbonate mudstone. (description from Dover et al., 2004, p. 32 (Table 1)); [Howard Pass C-4. 68°32'52", 158°06'40". Brownish-gray, grayish orange-weathering, fossiliferous lime wackestone to packstone containing bryozoans and corals. Forms matrix to abundant large colonial corals (Pragian-Eifelian), reported on by Bill Oliver, E and R: A-93-6.
Collected from unnamed Devonian limestone unit (Dls) unit, at about middle of ~4 m-thick fossiliferous unit underlying carbonate mudstone.
From same locality as above ("referring to 92AD43D"). (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (shipment A-95-3)0.
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6 Pa fragments of an ozarkodinid
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91 Panderodus spp. elements
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2 S (coniform) elements Pelekysgnathus sp. indet.
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6 indet. bar, blade, and platform fragments
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92AD46A
(32446-PC)
, Howard Pass
, Howard Pass B-3. Lat. 68 deg. 27'08" N., Long. 157 deg. 31'02" W. Sample 92AD46A is from strata that structurally underlie 92ADo78 and 79; 46A is 0.5 m below base of Kuna Formation. (description from Dover et al., 2004, p. 70 (Table 4)); [Howard Pass B-3. 68°27'08", 157°31'02". 2-8 cm-thick, even-bedded (locally cross-bedded), medium-dark-gray-gray, light gray-weathering, skeletal lime packstone-grainstone with crinoids and brachiopods. Collected from 0.5 m below top of ~10 m-thick, most northerly outcrop of Lisburne Group ("Ml" unit) overlain by black siliceous mudstone float (Kuna?). Forms a thrust sheet beneath sequence of sandstone and sandy limestone (=samples 92Ado78, 79) of unknown age.
Collected at ~820 m elevation, on northern part of NE-trending (high point = 973 m), ~2 miles east of Bupto Creek and ~3 miles north of Memorial Creek; NE1/4NE1/4 sec. 33, T. 11 S., R. 24 W. (description from Harris E&R report dated March 17, 1995, Shipment A-95-3)]
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3 Pa elements Bispathodus aculeatus plumulus (Rhodes, Austin and Druce)
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1 Pa element Siphonodella obsoleta Hass
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1 unassigned Sc element fragment
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9 indet. bar, blade, and platform elements
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92AD50C
(32447-PC)
, Howard Pass
, Howard Pass C-5. Lat. 68 deg. 44'45" N., Long. 158 deg. 55'35" W. Possibly graded-bedded, partly silicified limestone rich in crinoid columnals. Thin section is medium- to coarse-grained, poorly sorted, diverse skeletal grainstone. Bioclasts chiefly crinoid ossicles (20-40 percent), along with lesser bryozoans, foraminifers, siliceous sponge spicules, brachiopod fragments, and ostracodes; lithoclasts include glauconite, micrite, noncalcarous (locally spiculitic) mudstone and phosphate. Collected approx. 15 m below top of approx. 50-60-m-thick section of unit Mlri. Stratigraphic up seems to be to the south, based on sedimentary structures; section could be structurally thickened. If section is depositionally continuous, 92AD52A (loc. 3) should be near botton. This is the furthest northwest exposure of unit Mlri in the Howard Pass 1:250,000 quadrangle. (description from Dover et al., 2004, p. 29 (Table 1)); [Howard Pass C-5. 68°44'47", 158°55'35". Possibly graded-bedded, partly silicified limestone rich in crinoid columnals.
Collected ~15 m below top of ~50-60 m-thick section of Ipnavik facies of Lisburne Group. Stratigraphic up seems to be to the south, based on sedimentary structures (but could be structually repeated). If section is not repeated, 92AD52A should be near top and 50C should be near bottom.
Collected at 760+ m elevation, on top of small knob, ~2 miles due west of Jubilee Creek and ~3/4 mile east of hill 815 m; center sec. 13, T. 8 S., R. 30 W.
This is the furthest northwest exposure of Ipnavik facies in the Howard Pass quadrangle. (description from Harris E&R report dated March 7, 1995, shipment A-95-3)]
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1 Pa element fragment Bactrognathus excavatus Branson and Mehl
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16 Pa elements Bispathodus stabilis (Branson and Mehl) .....
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... or Bispathodus utahensis Sandberg and Gutschick
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1 "Hindeodella" segaformis Bischoff s.f. bar fragment
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Idioprioniodus conjunctus (Gunnell)
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17 Pa elements Polygnathus communis cairna Hass
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2 Pa fragments Polygnathus spp. indet.
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1 Pa element fragment Pseudopolygnathus pinnatus (Voges)
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2 Scaliognathus praeanchoralis Lane, Sandberg, and Ziegler fragments
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6 Pb elements Scaliognathus sp. indet.
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48 indet. bar, blade, and platform fragments
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REDEPOSITED LATE KINDERHOOKIAN CONODONTS:
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13 Pa element Pseudopolygnathus primus Branson and Mehl
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3 incomplete Pa elements Siphonodella isosticha (Cooper)
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5 Pa element fragments Siphonodella sp. indet.
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REDEPOSITED LATE KINDERHOOKIAN OR EARLY OSAGEAN CONODONTS
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8 Pa elements Gnathodus punctatus (Cooper)
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92AD52A
(32448-PC)
, Howard Pass
, Howard Pass C-5. Lat. 68 deg. 43'55" N., Long. 158 deg. 55'00" W. Very fine grained, medium- to medium-dark-gray limestone containing fine-grained skeletal pack/grainstone; bioclasts mostly (80 percent) calcareous sponge spicules (to 3 mm long). Other grains include bryozoan, brachiopod and crinoid fragments, ostracode valves, and rounded clasts of noncalcareous mudstone. Collected from approx. 10 m below rubble of mafic igneous sill, stratigraphically above(?) 92AD50C (loc. 2). (description from Dover et al., 2004, p. 30 (Table 1)); [Howard Pass C-5. 68°43'55", 158°55'00". Very fine-grained, medium- to medium dark-gray limestone with fine-grained skeletal debris.
Collected from ~ 10 m below rubble of mafic igneous sill, stratigraphically above(?) 92AD50C.
Collected at ~600 m elevation, ~1 mile south (and slightly east) of sample 92AD50C and ~1 mile due west of Jubilee Creek; NE1/4SE1/4 sec. 24, T. 8 S., R. 30 W. (description from Harris E&R report dated March 17, 1995, Shipment no. A-95-3)]
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57 Pa elements Bispathodus utahensis Sandberg and Gutschick?
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7 "Hindeodella" segaformis Bischoff s.f. bar fragment
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Idioprioniodus conjunctus (Gunnell)
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20 Pa elements Polygnathus communis Branson and Mehl
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1 Scaliognathus praeanchoralis Lane, Sandberg, and Ziegler? fragment
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REDEPOSITED LATE KINDERHOOKIAN CONODONTS:
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92AD55-0
(32449-PC)
, Howard Pass
, Howard Pass B-3. Lat. 68 deg. 19'36" N., Long. 157 deg. 45'15" W. About 1 km southwest of type sectionof the Kuna Formation. Sample 55-0 is from near or at top of Rough Mountain Creek unit. (description from Dover et al., 2004, p. 71 (Table 4)); [Howard Pass B-3. 68°19'36", 157°45'15". 4 cm-thick-bedded crinoidal lime grainstone with 1/2 cm-thick partings.
Sample collected from top of Lisburne "platform facies" exposure underlying Kuna Fm. (may not be top of unit, actual contact not exposed). Rocks are similar in facies and stratigraphic setting (and age?) to 91AD9F (USGS colln 31743-PC) which yielded late Famennian through much of Osagean conodonts.
Collected at ~820 m elevation, ~3/4 mile SW of Kuna type section, on west side of Safari Creek, ~2.5 miles west of headwaters of Ipnavik River; SE1/4SE1/4 sec. 20, T. 34 N., R. 5 E. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]
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1 Pa element Polygnathus inornatus Branson
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2 unassigned Sc (2 morphotypes) elements
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35 indet. bar, blade, and platform fragments
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92AD55-22
(32450-PC)
, Howard Pass
, Howard Pass B-3. Lat. 68 deg. 19'36" N., Long. 157 deg. 45'15" W. About 1 km southwest of type section of the Kuna Formation. Sample 55-22 is from the limestone and shale member of the Kayak Shale, about 12 m below contact with Rough Mountain Creek unit. (description from Dover et al., 2004, p. 71 (Table 4)); [Howard Pass B-3. 68°19'36", 157°45'15". Dark-yellow-orange- to moderate yellow-brown-weathering, skeletal lime wackestone-packstone containing crinoids and brachiopods and interbedded with sandstone, calcareous sandstone, and shale.
Collected 3 m below top of Kayak Shale(?) exposure. ~9 cm of covered interval separates top of highest Kayak(?) exposure from base of "platform facies" outcrop.
From same locality as above ("referring to 92AD55-0"). (description from Harris E&R report dated March 17, 1995, shipment no. A-95-3)]
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4 Pa element fragments Bispathodus aculeatus plumulus (Rhodes, Austin & Druce) nodosus morphotype
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3 Pa element fragments Bispathodus stabilis (Branson & Mehl) ...
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.... or Bispathodus utahensis Sandberg and Gutschick
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4 Pa elements (chiefly fragments) Pseudopolygnathus nodomarginatus E.R. Branson?
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176 indet. bar, blade, and platform fragments
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92AD57E
(32451-PC)
, Howard Pass
, Howard Pass C-5. Lat. 68 deg. 33'43" N., Long. 158 deg. 51'45" W. (description from Dover et al., 2004, p. 67 (Table 4)); [Howard Pass C-5. 68°33'43", 158°51'45". 1/2-6 cm-thick, platy- to flaggy-bedded, light-gray to beige, crinoidal (40%), partly dolomited micrite with spines interbedded with lime packstone-wackestone and packstone-grainstone.
Collected ~30 m below top of ~80 m-thick (very rough estimate) section in Mississippian "crinoidal facies" (of Gil Mull) of Lisburne Group.
Collected from southern end of small hill (~900 m+ high), 2.75 miles west of Drenchwater Creek, ~0.5 mile east of west fork and ~0.25 mile west of east fork of Rampart Creek; NE1/4SW1/4 sec. 23, T. 10 S., R. 30 W. (description from Harris E&R report dated March 17, 1995; shipment A-95-3)]
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4 Pa element Bispathodus stabilis (Branson and Mehl) ...
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... or Bispathodus utahensis Sandberg and Gutschick
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7 Pa element Polygnathus delicatulus Ulrich and Bassler
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12 Pa elements Polygnathus inornatus Branson
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4 Pa elements (chiefly fragments) Polygnathus symmetricus Branson
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Siphonodella obsoleta Hass
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38 indet. (mostly Siphonodella) bar, blade, and platform fragments
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92AD59A
(32452-PC)
, Howard Pass
, Howard Pass C-5. Lat. 68 deg. 35'45" N., Long. 158 deg. 27'20" W. Sample from 3- to 6-cm-thick bed of fine-grained, dark-gray, very light gray to medium-gray-weathering, very fetid limestone that has a ghostly texture of black spheroids (calcitized radiolarians?). Thin section is calcite crystal mosaic that contains relict, carbonate-replaced radiolarians. Sample taken approx. 3 m below top of approx. 30-m-thick section (poorly exposed and could be folded) mostly black chert (and (or) silicified mudstone) but including silty bands and spicules and approx. 20-30 percent limestone. Uppermost part of section is light-gray chert that contains radiolarians of Mississippian? age (92AD59G, table 2). (description from Dover et al., 2004, p. 31 (Table 1)); [Howard Pass C-5. 68°35'48", 158°27'25". 3-6 cm-thick-bedded, fine-gray, very light-gray- to medium-gray-weathering, very fetid limestone with ghostly texture of black spheroids (calcitized radiolarians?).
Collected from Mississippian "deeper-water facies" of the Lisburne, ~3 m below top of ~ 30 m(?)-thick section (poorly exposed and could be folded) comprised mostly of black chert (and/or silicified mudstone) with silty bands and spicules and ~20-30% limestone. Uppermost part of section is light-gray radiolarian chert.
Collected from NW side of small knob (~660 m+ high), ~1.5 miles SE of junction of Kiligwa River and Drenchwater Creek; NE1/4NE1/4 sec. 9, T. 10 S., R. 29 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]
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all conodonts partly coated and invaded by organic grunge.
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2 Pa element fragments Gnathodus pseudosemiglaber Thompson and Fellows?
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42 indet. bar, blade, and platform fragments
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92AD59AA
(32453-PC)
, Howard Pass
, Howard Pass C-5. Lat. 68 deg. 35'45" N., Lat. 158 deg. 27'20" W. Lithologically similar to 92AD59A, but a thicker bed (15-35 cm) that has obvious parallel and cross laminae on weathered surface. Thin section is calcite-replaced-radiolarian-packstone that contains lesser sponge spicules; matrix is noncalcareous mud. Collected approx. 15 m below 92AD59A. (description from Dover et al., 2004, p. 31 (Table 1)); [Howard Pass C-5. 68°35'48", 158°27'25". Similar in lithology to 92AD59A, but in a thicker bed (15-35 cm), with obvious parallel and cross laminae on weathered surface. Collected ~ 15 m below 92AD59A.
From same locality as above ("referring to 92AD59A"). (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]
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All conodonts partly coated and invaded by organic grunge
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3 Pa elements Gnathodus texanus Roundy
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23 indet. bar, blade, and platform fragments
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92AD63A-12.6
(32455-PC)
, Howard Pass
, Howard Pass A-2. 68°07'41", 156°47'05". Crinoidal lime pack/grainstone in 6-20 cm-thick beds. Collected ~3 below top of section in upper part of ~15.5 m-thick outcrop.
Northernmost sample collected at ~620 m elevation.
92AD63A, 64-6, 65-4, and 66 from ~65-75 m (upper 30 m may be structural repeat) measured section in unnamed unit of "unusual" Lisburne Group facies of intercalated limestone and sandstone overlain by black, siliceous mudstone rubble of Kuna(?). Section consists of ~15 m and ~20-30 m subcrop intervals separated by covered intervals. At ~30 m from top, section separated by grassy tundra and black, siliceous mudstone rubble of Kuna(?). Base of section structurally disturbed(?). These rocks are similar lithologically (and age?) to 92AD36A (NO CONODONTS RECOVERED), 36E, and 37D. For the complete picture, refer to diagram on submittal form. Section may represent a single stratigraphic sequence with 63A-12.6 being youngest and 66B (and/or D) being oldest or section may be two repeated thrust slices with 63A-12.6 being youngest and 64-6 being oldest in upper slice and 65-4 being youngest and 66B (and/or D) being oldest in lower slice. Age submitted as Mississippian and possibly (in part) ian(?) [note by Blodgett, previous word is missing first part]. Collected on east side of south-trending ridge, just north of Rough Mtn. Creek; SE1/4 sec. 24, T. 32 N., R. 9 E. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)
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4 Pa elements Polygnathus communis cairna Hass
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1 Pa element Pseudopolygnathus nodomarginatus (E.R. Branson)
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4 large Pa element fragments Pseudopolygnathus sp. indet.
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14 indet. bar, blade, and platform fragments
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92AD63A-2.5
(32454-PC)
, Howard Pass
, Howard Pass A-2. 68°07'41", 156°47'05". Skeletal (crinoidal) lime wacke/packstone in 20-cm-thick bed.
Collected ~13 M below top of section and ~10 m below 63A-12.6, in lower part of ~15.5 m-thick subcrop overlying 10+ m-thick covered interval.
92AD63A, 64-6, 65-4, and 66 from ~65-75 m (upper 30 m may be structural repeat) measured section in unnamed unit of "unusual" Lisburne Group facies of intercalated limestone and sandstone overlain by black, siliceous mudstone rubble of Kuna(?). Section consists of ~15 m and ~20-30 m subcrop intervals separated by covered intervals. At ~30 m from top, section separated by grassy tundra and black, siliceous mudstone rubble of Kuna(?). Base of section structurally disturbed(?). These rocks are similar lithologically (and age?) to 92AD36A (NO CONODONTS RECOVERED), 36E, and 37D. For the complete picture, refer to diagram on submittal form. Section may represent a single stratigraphic sequence with 63A-12.6 being youngest and 66B (and/or D) being oldest or section may be two repeated thrust slices with 63A-12.6 being youngest and 64-6 being oldest in upper slice and 65-4 being youngest and 66B (and/or D) being oldest in lower slice. Age submitted as Mississippian and possibly (in part) ian(?) [note by Blodgett, previous word is missing first part]. Collected on east side of south-trending ridge, just north of Rough Mtn. Creek; SE1/4 sec. 24, T. 32 N., R. 9 E. (description from Harris E&R report dated March 17, 1995; shipment A-95-3)
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2 Pa Bispathodus aculeatus plumulus (Rhodes, Austin, and Druce)
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15 Pa elements Bispathodus stabilis (Branson and Mehl)
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3 Pa elements Hindeodus crassidentatus (Branson and Mehl)
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118 Pa elements Polygnathus communis cairna Hass
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10 Pa elements Polygnathus delicatulus Ulrich and Bassler
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15 Pa elements Pseudopolygnathus n. sp. (with two rostral ridges)
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1 Pa element fragment Pseudopolygnathus sp. indet.
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7 Pa elements Siphonodella crenulata (Cooper)
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12 Pa elements Siphonodella cf. S. isosticha (Cooper)
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10 Pa (fragments), 1 M, Siphonodella spp. indet.
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69 indet. bar, blade, and platform fragments
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92AD64-6
(32456-PC)
, Howard Pass
, Howard Pass A-2. 68°07'38", 156°47'10". 10 cm-thick-bedded crinoidal lime grainstone interlayers with noncalcareous sandstone.
Collected ~21 m below top of section, in middle part of 14 m-thick subcrop overlying grassy tundra and black, siliceous mudstone rubble of Kuna(?) and underlying 10+ m-thick interval.
92AD63A, 64-6, 65-4, and 66 from ~65-75 m (upper 30 m may be structural repeat) measured section in unnamed unit of "unusual" Lisburne Group facies of intercalated limestone and sandstone overlain by black, siliceous mudstone rubble of Kuna(?). Section consists of ~15 m and ~20-30 m subcrop intervals separated by covered intervals. At ~30 m from top, section separated by grassy tundra and black, siliceous mudstone rubble of Kuna(?). Base of section structurally disturbed(?). These rocks are similar lithologically (and age?) to 92AD36A (NO CONODONTS RECOVERED), 36E, and 37D. For the complete picture, refer to diagram on submittal form. Section may represent a single stratigraphic sequence with 63A-12.6 being youngest and 66B (and/or D) being oldest or section may be two repeated thrust slices with 63A-12.6 being youngest and 64-6 being oldest in upper slice and 65-4 being youngest and 66B (and/or D) being oldest in lower slice. Age submitted as Mississippian and possibly (in part) ian(?) [note by Blodgett, previous word is missing first part]. Collected on east side of south-trending ridge, just north of Rough Mtn. Creek; SE1/4 sec. 24, T. 32 N., R. 9 E. (description from Harris E&R report dated March 17, 1995, shipment A-95-3).
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3 Pa elements Bispathodus aculeatus aculeatus (Branson and Mehl)
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13 Pa elements Hindeodus crassidentatus (Branson and Mehl)
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8 Pa elements Polygnathus inornatus E.R. Branson
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1 Pa element fragment Pseudopolygnathus sp. indet.
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Synclydognathus geminus (Hinde)
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45 indet. bar, blade, and platform fragments
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92AD65-4
(32457-PC)
, Howard Pass
, Howard Pass A-2. 68°07'35", 156°47'15". Skeletal lime wacke/packstone, containing brachiopods, corals and crinoids. Collected ~33 m below top of section, in middle part of ~ 15 m-thick subcrop overlying 10+ m-thick covered interval and underlying grassy tundra and black, siliceous mudstone rubble of Kuna(?).
92AD63A, 64-6, 65-4, and 66 from ~65-75 m (upper 30 m may be structural repeat) measured section in unnamed unit of "unusual" Lisburne Group facies of intercalated limestone and sandstone overlain by black, siliceous mudstone rubble of Kuna(?). Section consists of ~15 m and ~20-30 m subcrop intervals separated by covered intervals. At ~30 m from top, section separated by grassy tundra and black, siliceous mudstone rubble of Kuna(?). Base of section structurally disturbed(?). These rocks are similar lithologically (and age?) to 92AD36A (NO CONODONTS RECOVERED), 36E, and 37D. For the complete picture, refer to diagram on submittal form. Section may represent a single stratigraphic sequence with 63A-12.6 being youngest and 66B (and/or D) being oldest or section may be two repeated thrust slices with 63A-12.6 being youngest and 64-6 being oldest in upper slice and 65-4 being youngest and 66B (and/or D) being oldest in lower slice. Age submitted as Mississippian and possibly (in part) ian(?) [note by Blodgett, previous word is missing first part]. Collected on east side of south-trending ridge, just north of Rough Mtn. Creek; SE1/4 sec. 24, T. 32 N., R. 9 E. (description from Harris E&R report dated March 17, 1995, shipment no. A-95-3).
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2 Pa elements Bispathodus aculeatus aculeatus (Branson and Mehl)
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43 Pa elements Polygnathus communis cairna Hass
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7 Pa elements Polygnathus inornatus Branson
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8 Pa elements Synclydognathus geminus (Hinde)
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20 indet. bar, blade, and platform fragments
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92AD66-1
(32458-PC)
, Howard Pass
, Howard Pass A-2. 68°07'32", 156°47'18". Crinoidal lime grainstone with some rugose corals.
Collected ~45 m below top of section, near base, in upper part of ~20-30 m-thick subcrop underlying 10+ m-thick covered interval.
92AD63A, 64-6, 65-4, and 66 from ~65-75 m (upper 30 m may be structural repeat) measured section in unnamed unit of "unusual" Lisburne Group facies of intercalated limestone and sandstone overlain by black, siliceous mudstone rubble of Kuna(?). Section consists of ~15 m and ~20-30 m subcrop intervals separated by covered intervals. At ~30 m from top, section separated by grassy tundra and black, siliceous mudstone rubble of Kuna(?). Base of section structurally disturbed(?). These rocks are similar lithologically (and age?) to 92AD36A (NO CONODONTS RECOVERED), 36E, and 37D. For the complete picture, refer to diagram on submittal form. Section may represent a single stratigraphic sequence with 63A-12.6 being youngest and 66B (and/or D) being oldest or section may be two repeated thrust slices with 63A-12.6 being youngest and 64-6 being oldest in upper slice and 65-4 being youngest and 66B (and/or D) being oldest in lower slice. Age submitted as Mississippian and possibly (in part) ian(?) [note by Blodgett, previous word is missing first part]. Collected on east side of south-trending ridge, just north of Rough Mtn. Creek; SE1/4 sec. 24, T. 32 N., R. 9 E. (description from Harris E&R report dated March 17, 1995, shipment no. A-95-3).
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5 Pa elements Bispathodus aculeatus plumulus (Rhodes, Austin, and Druce) including 1 nodosus morphotype
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6 Pa elements Bispathodus stabilis (Branson and Mehl)
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1 Pa and 1 Sa elements Hindeodus crassidentatus (Branson and Mehl)?
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22 elements (all sizes) Mehlina spp. .....
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..... and(or) Hindeodus crassidentatus (Branson and Mehl)
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27 Pa elements Polygnathus inornatus Branson (all sizes)
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Synclydognathus geminus (Hinde)
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89 indet. bar, blade, and platform fragments
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92AD66B
(32459-PC)
, Howard Pass
, Howard Pass A-2. 68°07'25", 156°47'18". Nodular-bedded calcareous sandstone with shaly parting. Collected ~base of section,(? meters below 66D), in structurally disturbed bed (could be slump), in ~2--30 m-thick subcrop.
Collected at ~580 m elevation, ~1.5 miles SE of hill 915 elevation.
92AD63A, 64-6, 65-4, and 66 from ~65-75 m (upper 30 m may be structural repeat) measured section in unnamed unit of "unusual" Lisburne Group facies of intercalated limestone and sandstone overlain by black, siliceous mudstone rubble of Kuna(?). Section consists of ~15 m and ~20-30 m subcrop intervals separated by covered intervals. At ~30 m from top, section separated by grassy tundra and black, siliceous mudstone rubble of Kuna(?). Base of section structurally disturbed(?). These rocks are similar lithologically (and age?) to 92AD36A (NO CONODONTS RECOVERED), 36E, and 37D. For the complete picture, refer to diagram on submittal form. Section may represent a single stratigraphic sequence with 63A-12.6 being youngest and 66B (and/or D) being oldest or section may be two repeated thrust slices with 63A-12.6 being youngest and 64-6 being oldest in upper slice and 65-4 being youngest and 66B (and/or D) being oldest in lower slice. Age submitted as Mississippian and possibly (in part) ian(?) [note by Blodgett, previous word is missing first part]. Collected on east side of south-trending ridge, just north of Rough Mtn. Creek; SE1/4 sec. 24, T. 32 N., R. 9 E. (description from Harris E&R report dated March 17, 1995, shipment no. A-95-3).
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3 Pa element fragments Bispathodus spp. indet.
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13 Pa elements Hindeodus crassidentatus (Branson and Mehl)
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12 juvenile Pa elements Polygnathus inornatus Branson ....
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... and Polygnathus longiposticus Branson and Mehl
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1 juvenile Pa element Pseudopolygnathus nodomarginatus (E.R. Branson)?
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89 indet. bar, blade, and platform fragments
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92AD66D
(32460-PC)
, Howard Pass
, Howard Pass A-2. 68°07'27", 156°47'21". 20 cm-thick bedded, crinoidal-skeletal lime grainstone intercalated with shale and sandstone. Collected ~base of section, in lowest structurally undisturbed bed, in ~20-30 m-thick subcrop underlying 10+ m-thick covered interval underlying 10+ m-thick covered interval.
92AD63A, 64-6, 65-4, and 66 from ~65-75 m (upper 30 m may be structural repeat) measured section in unnamed unit of "unusual" Lisburne Group facies of intercalated limestone and sandstone overlain by black, siliceous mudstone rubble of Kuna(?). Section consists of ~15 m and ~20-30 m subcrop intervals separated by covered intervals. At ~30 m from top, section separated by grassy tundra and black, siliceous mudstone rubble of Kuna(?). Base of section structurally disturbed(?). These rocks are similar lithologically (and age?) to 92AD36A (NO CONODONTS RECOVERED), 36E, and 37D. For the complete picture, refer to diagram on submittal form. Section may represent a single stratigraphic sequence with 63A-12.6 being youngest and 66B (and/or D) being oldest or section may be two repeated thrust slices with 63A-12.6 being youngest and 64-6 being oldest in upper slice and 65-4 being youngest and 66B (and/or D) being oldest in lower slice. Age submitted as Mississippian and possibly (in part) ian(?) [note by Blodgett, previous word is missing first part]. Collected on east side of south-trending ridge, just north of Rough Mtn. Creek; SE1/4 sec. 24, T. 32 N., R. 9 E. (description form Harris E&R report dated March 17, 1995; shipment A-95-3)
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Nearly all conodonts are fractured and somewhat deformed. Conodonts very abundant so that only the +60 mesh fraction was picked.
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3 Pa elements Bispathodus stabilis (Branson and Mehl)
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1 Pa and 1 Sb elements Hindeodus crassidentatus (Branson and Mehl)
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26 Pa elements (mostly very large specimens) Polygnathus inornatus Branson
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1 unassigned digyrate Pb element
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80 indet. bar, blade, and platform fragments
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92AD67D
, Howard Pass
, Howard Pass A-2. 68°08'09", 156°46'35". Massive, medium-brownish-gray, light-gray-weathering peloidal lime grainstone. From unnamed Devonian unit in fault contact with basalts, stratigraphically below 92ABS195, at base of 4-m-thick limestone outcrop a few 10's of meters south of basalts.
Collected at ~700 m elevation, on SE side of ridge (high point = 915 m), ~2.5 miles south of Flora Creek and ~1 mile north of Rough Mountain Creek, western Brooks Range; NE1/4NE1/4 sec. 34, T. 32 N., R. 9 E. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3).
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92AD67J
, Howard Pass
, Howard Pass A-2. 68°08'04", 156°46'40". Fine-grained calcareous sandstone (storm deposits?).
From rubble crop underlying 92AD67D outcrop.
From same locality as above ("referring to 92AD67D") but at ~680 m elevation, ~1/10 mile SW of 92AD67D. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (shipment no. A-95-3).
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92AD67L
(12467-SD)
, Howard Pass
, Howard Pass A-2. 68°08'04", 156°46'40". Calcareous clast conglomerate (storm deposits?) with some fossil fragments. Clasts are mostly micritic and up to 10 cm long.
Collected from rubble crop at same stratigraphic level as 92AD67J.
From same locality above ("referring to 92AD67J"). (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (shipment no. A-95-3)
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1 Belodella devonica (Stauffer) element
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3 Panderodus sp. elements
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3 S (coniform) elements Pelekysgnathus sp. indet.
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1 Pa element Polygnathus quadratus Klapper, Ziegler and Mashkova
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1 Pa element Polygnathus quadratus Klapper, Ziegler and Mashkova?
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2 Pa element fragments Polygnathus sp. indet.
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7 indet. bar, blade, and platform and coniform fragments
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92ABS195
, Howard Pass
, Howard Pass A-2. 68°08'07", 156°46'48". Light-gray, medium- to light gray-weathering lime mudstone with peloids and skeletal fragments.
Collected from rubble directly adjunct to contact with basalt, stratigraphically above 92AD67D.
From same locality as above ("referring to 92AD67L") except collected at ~700 m elevation, ~1/10 mile west of 92AD67D. (description from Harris E&R report dated March 17, 1995; Shipment no. A-95-3)
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1 relatively hollow (belodellid, dvorakid, or neopanderodid) coniform fragment
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92AD68C
, Howard Pass
, Howard Pass B-5. 68°24'43", 158°54'10". Massive, unbedded, light-gray, fossiliferous (corals, brachiopods and stromatoporoids) skeletal lime wackestone with 5-10% chert nodules.
Collected from isolated outcrop (fault block(?) in unnamed Devonian limestone unit).
Collected on west side of Buccaneer Creek, ~1/4 mile north of junction of Buccaneer Creek and unnamed tributary and 3 3/4 miles west of Primus Creek, western Brooks Range; SE1/4SW1/4 sec. 10, T. 12 S., R. 30 W. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (shipment A-95-3).
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92AD69B
(12468-SD)
, Howard Pass
, Howard Pass B-5. Lat. 68 deg. 24'40" N., 158 deg. 54'00" W. Massive, unbedded, crinoidal lime wacke/packstone with stromatoporoids. Thin section is partly dolomitized stromatoporoid wackestone; subordinate bioclasts include crinoid ossicles and brachiopod fragments. Collected from isolated outcrop (fault block?) topographically (and stratigraphically?) below 92AD68C. Table 3 contains megafossil data from this locality. (description from Dover et al., 2004, p. 45 (Table 1)); [Howard Pass B-5. 68°24'40", 158°54". Massive, unbedded, crinoidal lime wacke-packstone with stromatoporoids. Collected from isolated outcrop (fault block?) topographically (and stratigraphically?) below 92AD68C.
From same locality as above ("referring to 92AD68C") except collected ~ 1/10 mile east of 82AD68C. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]
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All conodonts have a substantial amount of adhering organic grunge so that CAI is difficult to determine.
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2 P elements Icriodus symmetricus Branson and Mehl
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8 Pa elements (incomplete) Polygnathus dubius Hinde
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10 Pa element fragments Polygnathus sp. indet.
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56 indet. bar, blade, platform and coniform elements
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92AD70A
(12469-SD)
, Howard Pass
, Howard Pass B-5. Lat. 68 deg. 24'47" N., Lat. 158 deg. 53.30" W. Sample from 25-cm-thick bed of very sooty, fossiliferous (sparse crinoids and gastropods) micritic limestone with limy shale partings. Thin section is lime mudstone containing sparse, 2-mm-thick laminae of skeletal wacke/packstone; bioclasts include crinoid ossicles and calcareous sponge spicules. Collected approx. 4 m above base of approx. 10-m-thick outcrop of unnamed Devonian unit. Lithology is similar and age is equivalent to that at 92AD28A (loc. 74). Heavy-mineral concentrate includes phosphatic brachiopod fragments. (description from Dover et al., 2004, p. 46 (Table 1)); [Howard Pass B-5. 68°24'48", 158°53'55". 25-cm-thick bed of very sooty, fossiliferous (sparse crinoids and gastropods) micritic limestone with limy shale partings. Collected ~4 m above base of ~10-m-thick outcrop of unnamed Devonian unit. Lithology (and age?) = ~92AD28A section.
Collected on east side of Buccaneer Creek Creek, ~1/2 mile north of junction of Buccaneer Creek and unnamed tributary and 2 1/4 miles south of hill 705 m, western Brooks Range. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]
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4 Belodella devonica (Stauffer) elements
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1 Dvorakia sp. indet. element
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20 juvenile to gerontic Pa elements Polygnathus linguiformis linguiformis Hinde gamma morphotype
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22 juvenile to subadult Pa elements Polygnathus parawebbi Chatterton
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+100 indet. long bar and blade fragments
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92AD72-5
(32461-PC)
, Howard Pass
, Howard Pass B-3. Lat. 68 deg. 19'30" N., Long. 157 deg. 44'55" W. From chert-rich outcrop about 5 m below top of Rough Creek unit. (description from Dover et al., 2004, p. 71 (Table 4)); [Howard Pass B-3. 68°19'30", 157°44'55". 2-10 cm-thick beds of skeletal lime wacke/packestone with rugose corals, brachiopods, and crinoids.
Collected from isolated outcrop, ~5 m below top of 92AD55 section of "Ml" unit underlying Kuna Formation in type area.
Collected ~820 m elevation, on small ridge ~1/10 mile east of 92AD55 section and due south of headwaters of Safari Creek; SW1/4SW1/4 sec. 21. T. 34 N., R. 5 E. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]
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5 Pa elements Bispathodus stabilis (Branson and Mehl) ...
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... or Bispathodus utahensis Sandberg and Gutschick
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1 mid Pa element fragment of a double-rowed bispathodid
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36 Pa elements (all sizes) Polygnathus inornatus E.R. Branson
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1 Pa element Polygnathus longiposticus Branson and Mehl
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113 indet. bar, blade, and platform fragments
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92AD73G
(32462-PC)
, Howard Pass
, Howard Pass B-3. Lat. 68 deg. 19'38" N., Long. 157 deg. 45'05" W. Structural repeat of section at 92AD55 located 0.2 km to northeast; sample from about 6 m below top of Rough Mountain Creek unit. (description from Dover et al., 2004, p. 71 (Table 4)); [Howard Pass B-3. 68°19'38", 157°45'05" 15 cm-thick bed of skeletal lime wacke/packstone with crinoids and brachiopods.
Collected from isolated outcrop below 92AD55 section (separated by covered interval), ~78 m below top of 92AD55 section (78 m below 55-0) in "Ml" unit of Lisburne Group(?) or Kayak Fm of Endicott Group(?) Section has features of both.
Collected at ~800 m elevation, ~1/4 mile north (and slightly west) of 92AD72-5; SE1/4SE1/4 sec. 20, T. 34 N., R. 5 E. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]
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3 Pa elements Polygnathus inornatus E.R. Branson
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1 Pa element Polygnathus longiposticus Branson and Mehl
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1 Pa element fragment Polygnathus sp. indet.
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13 indet. bar, blade, and platform fragments
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92AD214-1.5
(32463-PC)
, Howard Pass
, Howard Pass B-5. Lat. 68 deg. 23'10" N., Long. 158 deg. 54'00" W. Samples at this locality from approx. 85-m-thick measured section of unit Mlri. Section consists of interbedded limestone turbidites and shale (0-47 m), mostly shale (47-60 m), and mostly chert (60-85 m). Turbidites here are similar to those in the Mlri unit in the Howard Pass C-3 quadrangle, 30 mi to the east, but background sediment here is more shaly and less cherty than to the east. Sample 92AD214-1.5 is from 1.5 m above base of section. Sample is fine-grained limestone; 8-cm-thick, parallel- and cross-laminated turbidite that has a scoured base and contains disseminated pyrite. Thin section is very fine-grained, cross-bedded, calcite-cemented quartz-carbonate sandstone. Quartz grains (20-50 percent of slide) are angular, chiefly 40-90 microns in diameter. Carbonate clasts include crinoid ossicles and sponge spicules. (description from Dover et al., 2004, p. 46 (Table 1)); [Howard Pass B-5. 68°23'13", 158°54'40". Fine-grained limestone containing 8-cm-thick, parallel- and cross-laminated turbidites with scoured base and disseminated pyrite. Collected as Osagean "Ipnavik facies" of the Lisburne Group. "Ipnavik facies" in the Howard Pass C-3 quadrangle, 30 miles to the east, are mostly (all?) middle Osagean and the "turbidites" have similar lithology in both areas, but background sediment here is more shaly and less cherty than to the east. 92AD214-1.5 is 1.5 m above base of section.
Collected at stream bank section on southwest side of Buccaneer Creek, 2 1/4 mile due west of Primus Creek and ~2 miles north of junction of Primus and Buccaneer creeks, northwest area; center sec. 22, T. 12 S., R. 30 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]
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1 juvenile Pa element Bispathodus utahensis Sandberg and Gutschick
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92AD214-18.5
(32464-PC)
, Howard Pass
, Howard Pass B-5. Lat. 68 deg. 23'10" N., Long. 158 deg. 54'00" W. Lithology similar to 92AD214-1.5, but collected from a fetid, 40-cm-thick graded bed, a few meters below mafic dike and 18.5 m above base of approx. 85-m-thick measured section. Thin section is normally graded, parallel-laminated, quartz-carbonate sandstone cemented with calcite. Quartz grains (20-30 percent of slide) are angular, chiefly 60-90 microns in diameter. Carbonate clasts include crinoid ossicles and sponge spicules (some spicules partly pyritized). (description from Dover et al., 2004, p. 46 (Table 1)); [Howard Pass- B-5. 68°23'13", 158°54'00". Has similar lithology to 92AD214-1.5, but collected from a fetid, 40-cm-thick bed, a few meters below mafic dike.
From same locality as above ("referring to 92AD214-1.5"). (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]
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1 juvenile Pa element Bactrognathus? sp.
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2 Pa elements Doliognathus latus Branson and Mehl
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8 bar fragments "Hindeodella" segaformis Bischoff s.f.
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5 Pa elements Polygnathus communis communis Branson and Mehl
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3 Pb element fragments Scaliognathus? sp. indet.
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UNASSIGNED ELEMENTS: 7 M and 2 Sa
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40 indet. bar, blade, and platform fragments
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92AD214-44
(32465-PC)
, Howard Pass
, Howard Pass B-5. Lat. 68 deg. 23'10" N., Long. 158 deg. 54'00" W. Similar lithology to 92AD214-1.5, but collected from a 20-cm-thick bed scoured into black fissile shale; sample taken 44 m above base of approx. 85-m-thick measured section. Thin section is fine- to medium-grained skeletal grainstone, cemented chiefly with calcite but locally with chert. Diverse bioclasts include crinoid ossicles (20-50 percent of bioclasts), foraminifers (5-10 percent), ostracodes, brachiopods, and echinoid spines. Some bioclasts are micritized; others are partly or completely replaced by silica or pyrite. Minor brown mud clasts and <1 percent disseminated quart silt. Base of grainstone beds is scoured into dark brown shale containing 5-10 percent disseminated quartz silt. Heavy-mineral concentrate includes a pyritized ostracode steinkern. (description from Dover et al., 2004, p. 47 (Table 1)); [Howard Pass B-5. 68°23'13", 158°54'00". Has similar lithology to 92AD215-1.5, but collected from a 20-cm-thick bed scoured into black, fissile shale.
From same locality as above ("referring to 92AD215-1.5 and -18.5"). (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]
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13 Pa elements Bispathodus utahensis Sandberg and Gutschick
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1 subadult Pa element Gnathodus typicus Cooper
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5 bar fragments "Hindeodella" segaformis Bischoff s.f.
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12 Pa element Mestognathus praebeckmanni Sandberg, Orchard, and von Bitter
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5 Pa elements Polygnathus communis communis Branson and Mehl
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2 subadult Pa elements Pseudopolygnathus sp.
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2 Pa element fragments Geniculatus claviger Hass
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1 Pa element Synclydognathus geminus (Hinde)
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UNASSIGNED ELEMENTS: 9 Pb (4 morphotypes), 6 M (2 morphotypes), 2 Sb and 7 Sc (6 morphotypes)
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60 indet. bar, blade, and platform fragments
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92ADo60
, Howard Pass
, Howard Pass A-2. 68°11.44', 156°49'50". Recrystallized limestone with possible crinoids in contact with mafic igneous rocks. Limestone has epidote boxwork, etc. contact metamorphism effects. Collected from possibly Devonian and/or Mississippian carbonates intruded by mafic igneous rocks.
Collected ~1 mile north of Flora Creek and ~ 2 miles southeast of Nigtun Lake; SE1/4 SW1/4 sec. 4, T. 32 N., R. 9 E. (description from Harris E&R report dated March 17, 1995; Shipment no. A-95-3)
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92AK12A
, Howard Pass
, Howard Pass A-2. 68°11'45", 156°46'00". Recrystallized, interpillow(?) limestone. From same locality as above ("referring to 92ADo60"), except collected 1/10 km to the west of 92ADo60. (description from Harris E&R report dated March 17, 1995; Shipment no. A-95-3)
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92ADo274B
(32466-PC)
, Howard Pass
, Howard Pass C-5. Lat. 68 deg. 39'15" N., Long. 158 deg. 46'05" W. Fine-grained, reddish-brown-weathering dolostone interbedded with approx. 50 percent medium-dark-gray, approx. 0.5 -cm-thick (or less) chert layers containing sponge spicules. Thin section is dolomite, crystal mosaic (crystals euhedral to subhedrals; 20-150 microns in diameter) with irregular zones of chert locally rich in siliceous sponge spicules. Rocks here are an unusually carbonate-rich facies of unit lPMap. Lithogically similar to 92ABs180A (loc. 10) and to thin-bedded chert/dolostone at Lisburne Ridge (northeastern Howard Pass 1:250,000 quadrangle). Interbeds of medium- to dark gray chert (92ADo274A) contained corroded fragments of sponge spicules but no identifiable radiolarians. (description from Dover et al., 2004, p. 30 (Table 1)); [Howard Pass C-5. 68°39'17", 158° 46'00". Fine-grained, reddish-brown-weathering dolostone with ~50% medium-dark-gray, ~0.5-cm-thick (or less) chert interlayers containing sponge spicules. Collected from out and adjacent rubble of Mississippian(?) new(?) facies of Lisburne Group, similar to thin-banded chert/dolostone at Lisburne Ridge. Lithology is similar to 92ABS180.
Collected on northwest side of hill 835 m, 0.5 mile south of headwaters of Recon Creek and 2 1/4 miles north of headwaters of Rolling Pin Creek; NW1/4, NE1/4 sec. 19, T. 9 S., R. 29 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]
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2 Pa fragments Bispathodus utahensis Sandberg and Gutschick
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1 Pa element Gnathodus pseudosemiglaber Thompson and Fellows
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2 Pa element fragments Gnathodus sp. indet.
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1 small bar fragment "Hindeodella" segaformis Bischoff s.f.
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43 indet. bar, blade, and platform fragments
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92ARm31C
(32470-PC)
, Howard Pass
, Howard Pass B-5. Lat. 68 deg. 23' N., Long. 158 deg. 49'40" W. Platy limestone. Heavy-mineral concentrate includes phosphatized and (or) pyritized bioclasts and grains, and rare phosphatized gastropods. (description from Dover et al., 2004, p. 48 (Table 1)); [Howard Pass B-5. 68°22'58", 158°49'32". Platy limestone. Submitted as Ipnavik facies of the Lisburne(?) Group.
Collected at -460 m of elevation, -1/3 mile west of Primus Creek and - 1 1/2 miles north of junction of Primus and Buccaneer creeks; SE1/4 SW1/4 sec. 24, T. 12 S., R. 30 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]
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2 Pa elements Bispathodus utahensis Sandberg and Gutschick
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3 Pa element fragments Doliognathus latus Branson and Mehl
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17 small bar fragments "Hindeodella" segaformis Bischoff s.f.
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6 Pa elements Polygnathus communis communis Branson and Mehl
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3 Pa element fragments Geniculatus claviger Hass
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UNASSIGNED ELEMENTS: 3 Pa (2 Osagean morphotypes), 9 M, and 2 Sc
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151 indet. bar, blade, and platform fragments
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92ARm37B
(32471-PC)
, Howard Pass
, Howard Pass B-5. Lat. 68 deg. 23'30" N., Long. 158 deg. 48'55" W. Light-gray limestone interbedded with black and gray chert. Heavy-mineral concentrate includes phosphatized composite grains and bioclasts and phosphatic brachiopod fragments. (description from Dover et al., 2004, p. 47 (Table 1)); [Howard Pass B-5. 68°23'32", 158°48'55". Light-gray limestone interbedded with black and grey chert. Submitted as Ipnavik facies of the Lisburne(?) Group.
Collected at -480 m elevation, -1/3 mile west of Primus Creek, and -3/4 mile north (and slightly east) of 92ARM31C; NW1/4 NW1/4 sec. 24, T. 12 S., R. 30 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]
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20 Pa elements Bispathodus utahensis Sandberg and Gutschick
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1 Pa element Geniculatus claviger Hass
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11 Pa elements (all growth stages) Gnathodus semiglaber Bischoff
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1 small bar fragment "Hindeodella" segaformis Bischoff s.f.
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5 Idioprioniodus sp. indet. element fragments
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1 juvenile Pa element Pseudopolygnathus sp.
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UNASSIGNED ELEMENT: 2 M and 1 Sc
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110 indet. bar, blade, and platform fragments
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92ARM58A
, Howard Pass
, Howard Pass B-3. 68°26'06", 157°14'50". Gray limestone lens -8' x 4' in cleaved shale. Submitted as Mississippian(?) Kayak(?) Shale.
Collected at -580 m elevation, on north bank of Memorial Creek, -3/4 mile due north of Ipnavik River and 2 1/4 miles due south of Bupto Creek; center NE1/4 sec. 3, T. 12 S., R. 23 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)
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92ARM69A
(????)
, Howard Pass
, Howard Pass A-3. 68°13'50", 157°20'40". -15 feet-thick, gray, orange-weathering fossiliferous (brachiopods, crinoids, bryozoans(?), abundant shells) limestone intercalated with shale.
Collected from Devonian(?) indeterminate? "Dl" unit of Gil Mull.
Collected at -800 m elevation on SW part of north-trending ridge between peak 904 m and 919 m, 3.5 miles due north of Fauna Creek; SE1;4 NW1/4 sec. 30, T. 33 N., R. 7 E. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)
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22 Pa elements Polygnathus communis communis Branson and Mehl
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5 juvenile Pa elements Polygnathus symmetricus E.R. Branson
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Synclydognathus geminus (Hinde) 1 Pa and 6 S and M elements
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REDEPOSITED DEVONIAN CONODONTS:
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5 coniform elements Pelekysgnathus sp. indet.
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UNASSIGNED ELEMENTS: 1 Pb, 2 Sa (2 morphotypes), and 1 Sc
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101 indet. bar, blade, and platform fragments
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92ADW5
, Howard Pass
, Howard Pass C-5. 68°33.85', 158°38.3'. Medium-gray, fossiliferous (crinoids up to 1 cm in diameter), partly silicified limestone occurring between felsic volcanics and dark-gray silicified mudstone. Collected from same "volcanic and silicified mudstone" sequence that hosts the Drenchwater Pb-Zn mineralization, approximately 2 miles to the west. This sequence is currently dated by 319 m.y. by K-Ar biotite on volcanic rocks (with a large error). Submitted as Kuna Fm. or other facies of "Black Lisburne" Group of Mississippian or Pennsylvanian(?) age.
Collected at -700 m elevation, along north side of elongate hill 800+ m elevation, on north edge of deep stream valley which eventually flows into Wager Creek to the east; sec. 23, T. 10 S., R. 29 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)
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