Report on Referred Fossils |
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| Stratigraphic range: |
Ordovician, Silurian? and Devonian |
| Kinds of fossils: |
Corals |
| Quadrangle or area: |
Charley River and other quads |
| Shipment No.: |
A-61-18 |
| Referred by: |
Brabb, Earl E.
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| Report prepared by: |
Oliver, William A., Jr.
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| Date: |
12/05/1961 |
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Pre-Mississippian corals are covered in this report; other groups of fossils will be reported on separately. Please send all future Washington shipments directly to the P. and S. Branch, 338 U.S. National Museum; %Mrs. Kathryn Karlson.
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***
Brief statement of problem and remarks (from collector):
Collections 61ABa1463 and 61ABa1493 are from a previously unmapped region where stratigraphic control is needed. Collection 61ABa1762 is from a limestone which seems be interbedded with Woodchopper volcanics. The locality may be the same as Mertie's 38AMt106, which Kirk assigned to the Upper Devonian (Kirk's letter enclosed). If the coral from 61ABa1762 substantiates Kirk's age assignment for these rocks then: a) the published age of the Woodchopper volcanics must be revised
b) these rocks may be the only marine strata of Late Devonian age in this part of Alaska. Locality 61ATe21 is geographically close to 28AMt260 where a "high Middle Devonian" fauna was collected (USGS Bull. 816, p. 82). Note that Kirk, in a letter to Reeside (enclosed), states that the faunas previously considered "high Middle Devonian" are probably Late Devonian. Is it possible to tell whether the coral at 61ATe is Middle or Late Devonian?
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| User Note module to be added |
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61ABa1762
, Charley River
, Fossils from limestone which is probably interbedded with Woodchopper volcanic rocks. Charley River B-6 quad.; NE1/4, Sec. 10, T. 6 N., R. 20 E; southeast side of valley of Webber Creek; Lat. 65 deg. 21.8'N, Long. 143 deg. 35.7'W, coords (11.7, 8.0) [from Request for Examination of Fossils (Transmittal) sheet submitted by Earl Brabb, Oct. 12, 1961]
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stromatoporoid (indeterminate)
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61ATe21
, Eagle
, Float, apparently within Unit 4 of Brabb near McMann [Note by R.B. Blodgett; this is an obvious missprint, should be McCann] Hill, 0.4 mile due north of International Boundary Commission Monument 105, Lat. 64 deg. 55.3'N, Long. 141 deg. 00'W; coords (22.3, 16.6)[from Request for Examination of Fossils (Transmittal) sheet submitted by Earl Brabb, Oct. 12, 1961]
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61ABa1463
, Black River
, Coral found in float at base of limestone cliff. Fossils (but not this type of coral) found in place. Probably Devonian limestone; strat position not known - Northwest bank of Salmon Fork of Black River; Black River B-3 Quad; Lat. 66 deg. 29.8'N; Long. 142 deg. 24.8'W; coords (2.4, 17.0) )[from Request for Examination of Fossils (Transmittal) sheet submitted by Earl Brabb, Oct. 12, 1961]
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61ABa1493
, Black River
, Northeast bank of Tienashevun Slough, 1,000 feet N of Salmon Village, Black River C-4 Quad. Probably Devonian limestone strat. position not known. Lat. 66 deg. 34.3'N, Long. 142 deg. 33.8'W, coords (12.0, 4.9) )[from Request for Examination of Fossils (Transmittal) sheet submitted by Earl Brabb, Oct. 12, 1961] [Oliver et al., 1975, p. 34 provide following description: 66 deg. 34.3', 141 deg. 33.8'); Northeast bank of Tienasheavun Slough, 1,000 feet NW of Salmon Village, Black River C-4 quadangle, Alaska. (Lat. 66°34.3' N; Long. 142°33.8'W). Coral from this locality shipped previously. P &S number A-61-18. Massive, medium dark gray, fine-grained limestone with abundant black chert. (from E&R report by R.J. Ross, Jr. to Earl Brabb, dataed 6/29/62 (Shipment A-62-8)
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angulate streptelasmatid corals
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