Reference Detail of

Report on Referred Fossils
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Stratigraphic range: Jurassic & Cretaceous
Kinds of fossils: Mollusks
Quadrangle or area: DeLong Mtns., Misheguk Mtn., Howard Pass, Chandler Lake, Phillip Smith Mtn.
Shipment No.: A-65-11M
Referred by: Tailleur, Irv L.
Report prepared by: Jones, David L.
Date: 01/10/1966

This report covers collections of fossils from scattered localities in northern Alaska. Most of the fossils are Buchias of Valanginian age, including some fairly well preserved specimens of B. "sublaevis" from coquinoid limestone. Several collections of Jurassic fossils will be sent to R.W. Imlay. [Note by R.B. Blodgett: locality descriptions combines data from E&R report (by Jones) and Request for Examination of Fossils sheet (submitted by Tailleur)]

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65ATr38 (Mesozoic loc. M2938) , De Long Mts , DeLong Mtns. quad. at 68 deg. 26' 30" N., 162 deg. 42'00" W., sec. 33, T. 11 S., R. 46 W.; talus and float along small valley tributary to large branch of upper Kukpwruk River. Numerous Buchia in quartzitic wacke; apparently near base of unit because fossils found only near contact with chert.(description from E&R report); 68°26'30", 162°42'11" (description from Ellersieck et al., 1990)
Buchia sublaevis
Mull - Richfield 14-A1 (Mesozoic loc. M2953) , Sagavanirktok , Sagavinirktok quad., approx. 69 deg. 7' N., 147 deg. 45' W. North tributary to upper Kashivi Creek.
Buchia sp., perhaps B. okensis
65ATr159.4.1 and 65ATr159.4.2 (Mesozoic loc. M2951) , Philip Smith Mts , Phillip Smith quad. at 68 deg. 29'00" N., 149 deg. 14'00" W.; bedrock spur leading down to cut bank of Shublik, north side middle Atigun gorge. Coquinoid 100 or so feet above Shublik. 159.4.2 about 5 ft. above .1.
coquinoid limestone with Buchia sublaevis
65ATr153.3 (Mesozoic loc. M2951) , Chandler Lake , Chandler Lake quad. at 68 deg. 23'00" N., 150 deg. 52'30" W.; cut banks east side of Erratic Creek. Coquinoid in clay shale approximately 100 ft. above Shublik. 153.1 from southern bank, 153.3 from northern.
Buchia sublaevis coquina
65ATr153.1 (No Mesozoic loc. no. assigned) , Chandler Lake , Chandler Lake quad. at 68 deg. 23'00" N., 150 deg. 52'30" W.; cut banks east side of Erratic Creek. Coquinoid in clay shale approximately 100 ft. above Shublik. 153.1 from southern bank, 153.3 from northern.
Buchia sublaevis coquina
65ATr161.1F (Mesozoic loc. M2952) , Chandler Lake , Chandler Lake quad. at 68 deg. 28' N., 150 deg. 24' W.; high bank west side junction Peregrine and Cascade creeks. Coquinoid with chert.
Buchia sublaevis coquina
65ATr14.3 (Mesozoic loc. M2936B) , Misheguk Mtn , Misheguk Mtn. quad. at 68 deg. 46'30" N., 160 deg. 43'00" W., sec. 4, T. 8 S., R. 37 W.; banks on E. side of Driftwood. Two zones with several beds of coquinoid limestone in clay. Overlain(?) on north and south by Fortress Mtn. 14.1 from south zone; 14.3 from north zone.
Buchia sublaevis coquina
65ATr14.1 (Mesozoic loc. M2936A) , Misheguk Mtn , Misheguk Mtn. quad. at 68 deg. 46'30" N., 160 deg. 43'00" W., sec. 4, T. 8 S., R. 37 W.; banks on E. side of Driftwood. Two zones with several beds of coquinoid limestone in clay. Overlain(?) on north and south by Fortress Mtn. 14.1 from south zone; 14.3 from north zone.
Buchia sublaevis coquina
65ATr73.3 (Mesozoic loc. M2946A) , Howard Pass , Howard Pass quad. at 68 deg. 37'30" N., 156 deg. 42'30" W., sec. 36, T. 9 S., R. 21 W.; cuts on south bank of small stream south side of Lisburne Ridges, 0.1 mi. upstream from supra-Shublik oil shale locality. Clay banks with two zones of coquinoid, upstream (above) and downstream respectively.
Buchia sublaevis coquina
65ATr73.4 (Mesozoic loc. M2946B) , Howard Pass , Howard Pass quad. at 68 deg. 37'30" N., 156 deg. 42'30" W., sec. 36, T. 9 S., R. 21 W.; cuts on south bank of small stream south side of Lisburne Ridges, 0.1 mi. upstream from supra-Shublik oil shale locality. Clay banks with two zones of coquinoid, upstream (above) and downstream respectively.
Buchia sublaevis coquina
65ATr123B (Mesozoic loc. 29281 (Imlay 1981 report); Mesozoic loc. M2949 (Jones report)) , Chandler Lake , I.L. Tailleur, 1965. East wall of Tiglukpuk Creek on south flank of Tiglukpuk anticline, lat 68 deg. 21'15" N., long 151 deg. 52'30" W., Chandler Lake quadrangle, northern Alaska. Unnamed beds overlying Shublik Formation. Early Pliensbachian or latest Sinemurian. (from Imlay, 1981, p. 24)[Tailleur's transmittal sheet for Jones E&R report states: "Chandler Lake quad. at 68 deg. 21'15" N., 151 deg. 52'30" W.; bank on east side of Tiglukpuk Creek. Coquina in mudstone and with wacke."] [Imlay E&R report of 12/6/1965 states "Exposures on east wall of Tiglukpuk Creek on south flank of Tiglukpuk Creek anticline. Lat. 68 deg. 21'15" N., Long. 151 deg. 52'30" W., Chandler Lake Quad., Alaska. Rubble from bedrock of Otapiria zone above Shublik] [I.L. Tailleur, 1965. Talus on cutbank at Mesozoic loc. M2318. (description from Imlay, 1967, p. B6)]
Buchia sublaevis coquina
65ATr39 (Mesozoic loc. M2939) , De Long Mts , DeLong Mtns. quad. at 68 deg. 23'30" N., 162 deg. 41'30" W., sec. 17, T. 12 S., R. 46 W.; clay bank northeast side of headwater branch of Kukpowruk River. Concretions in clay shale with Buchia apparently overlain by Fortress Mtn. wacke adn within 50 ft. of Shublik. (description from E&R report); 68°23'42", 162°41'30" (description from Ellersieck et al., 1990)
Buchia sublaevis
65ATr40.1 (Mesozoic loc. M2940) , De Long Mts , DeLong Mtns. quad. at 68 deg. 26'00" N., 162 deg. 48'00" W., sec. 1, T. 12 S., R. 47 W.; cut bank on west side of Kukpowruk at upper branching. Buchia in quartzitic rhythmites above chert. (description from E&R report); 68°26'00", 162°48'20" (description from Ellersieck et al., 1990)
Buchia cf. B. sublaevis
65ATr96.1 (Mesozoic loc. M2948) , Howard Pass , Howard Pass quad. at 68 deg. 43'30" N., 158 deg. 28'30" W., sec. 30, T. 8 S., R. 27 W.; cut bank east side of Kiligwa just above sharp loop through vari-colored chert. Bank of moderately to thick-bedded wacke; Buchia from about 25 ft. above chert.
Buchia sp. indeter., not a Valanginian form
65ATr46.2 (Mesozoic loc. M2944) , Howard Pass , Howard Pass quad. at 68 deg. 41'45" N., 158 deg. 29' W., sec. 4, T. 9 S., R. 28 W.; high cut on west bank of loop in Kiligwa below Rolling Pin Creek. Buchia from medium-bedded rhythmites at least several hundred feet above base of Okpikruak Fm.
Buchia cf. B. volgensis
65ATr95.3 (Mesozoic loc. M2947) , Howard Pass , Howard Pass quad. at 68 deg. 58'15" N., 158 deg. 27' W., sec. 36, T. 5 S., R. 28 W.; cut bank southeast side of Kiligwa at Brady. 3 beds of coquinoid adjoined by mudstone.
Buchia sublaevis
65ATr44.1 (Mesozoic loc. M2942) , Misheguk Mtn , Misheguk Mtn. quad. at 68 deg. 42' N., 161 deg. 33' W., sec. 36, T. 8 S., R. 41 W.; West end of Ilingnorak Ridge. Buchia in siliceous wacke near contact with clay scar with fragments of concretions.
Buchia cf. B. sublaevis
65ATr44.2 (Mesozoic loc. M2943) , Misheguk Mtn , Misheguk Mt., east end of Ilingnorak Ridge at 68 deg. 42'45" N., 161 deg. 27' W., sec. 32, T. 8 S., R. 40 W.; Shelly siltstone, apparently in basal part of siliceous wacke unit.
Buchia sublaevis
65ATr42B (Mesozoic loc. M2941) , De Long Mts , DeLong Mtns. quad. at 68 deg. 36'30" N., 164 deg. 12' W., sec. 1, T. 10 S., R. 53 W.; cut bank on west side of loop of Ipewik River. Boudinaged(?) limestone lens in clay shale at north end of cuts of Mes. Loc. No. M1259.
Juvenile ammonites
65ATr10.3 (Mesozoic loc. M2924A) , De Long Mts , DeLong Mtns. quad. at 68 deg. 43'00" N., 163 deg. 12'30" W., sec. 25, T. 8 S., R. 48 W.; high cuts on outside of large west loop of Kukpowruk River. Talus of Buchia bearing concretions with septarian barite concretions and pyritized organic remains and Buchia in clay shale. Possibly 200 ft. below Fortress Mtn. Fm.
Buchia rugosa
65ATr10.5 (Mesozoic loc. M2929B) , De Long Mts , Clay banks adjoining [65ATr]10.3 on south. Ammonite impression in concretion
Juvenile ammonites
65ATr67a (Mesozoic loc. M2945A) , Howard Pass , Howard Pass quad. at 68 deg. 45'15" N., 158 deg. 48'30" W., sec. 10, T. 8 S., R. 29 W.; at mouth of Recon Creek on Jubilee Creek. Low cuts on cyclic wacke.
Buchia sp. cf. B. sublaevis
65ATr67b (Mesozoic loc. M2945B) , Howard Pass , Same locality and fossils as M2945A.
Buchia sp. cf. B. sublaevis
65ATr32.2 (Mesozoic loc. M2937) , De Long Mts , DeLong Mtns. quad. at 68 deg. 35'30" N., 162 deg. 05'00" W., sec. 12, T. 10 S., R. 44 W.; north bank of small west tributary to Kokolik River, between ridges of chert and quartzitic wacke. Buchia fragment on concretion in shale bank.
Buchia scraps, perhaps B. sublaevis
65ATr116.2 , Howard Pass , Howard Pass quad. at 68 deg. 25' N., 157 deg. 12' W., sec. 12, T. 12 S., R. 23 W.; cut bank on east tributary to Ipnavik River near Memorial Creek. Bank of clay with concretions.
Buchia sp. indeter.
65ATr145 , Chandler Lake , Chandler Lake quad. at 68 deg. 36' N, 152 deg. 04' W; bank on west side of middle Siksikpuk River. Mudstone near chert with fragmented belemnite.
65ATr71 , Howard Pass , Howard Pass quad. at 68 deg. 40'15" N, 157 deg. 36'30" W; Sec. 18, T. 9 S., R. 24 W.; cut bank on north side of Tauny Creek. Buchia in wacke with mudstone.