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Stratigraphic range: |
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Shipment No.: |
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Referred by: |
Blodgett, Robert B.
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Report prepared by: |
Flory, Richard A.
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Date: |
07/28/1980 |
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California State University, Chico Chico, California 95929 Department of Geological and Physical Sciences (916)-895-5262 July 28, 1980 To: Mr. Robert B. Blodgett Department of Geology, O.S.U. Corvallis, Oregon 97331
Dear Robert: List below are the identifications of the tabulates from the Alaskan material you sent me: (see faunal lists) I have compared your material with the illustrations in Churkin and others (1975)(USGS Prof. Paper 823 A,B,C,D,) and the following comparisons appear reasonable: Favosites sp. A = Favosites sp. (Pl. 20, fig. 1,2) Pachyfavosites sp. A = Pachyfavosites sp. (Pl. 20, fig. 3,4) Pachyfavosites sp. B = Pachyfavosites sp. (Pl. 20, fig. 5,6) Parastriatopora sp. = Parastriatopora sp. (Pl. 20, fig. 9, 10) Except for the absence of Heliolites your faunas appear similar in generic composition to the fauna listed in Churkin and others (1975) for the McGrath quad. (p. 33, table 14). The one exceptio to this is your 79RB19 which also contains Parastriatopora sp. which Churkin and others (1975) list from the Sleetmute quad (p. 33, table 15). The tabulates do not indicate a specific age interval, but they are compatible with the Eifelian age suggested by your conodont, brachiopod, and goniatite evidence. Hope this information is of help to you. Let me know if I can be of any further help. Sincerely, Richard A. Flory Associate Professor of Geology
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User Note module to be added |
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79RB4
(10060-SD)
, Mc Grath
, Long. 155 deg. 07'05"W., Lat. 62 deg. 04'03"N. NE1/4, SW1/4, NW1/4, SE1/4 sec. 22, T23N, R32W. Silicified fossils recovered from talus of limestone scree slope on west side of southeastward flowing stream in section 22. (description from Rigby and Blodgett, 1983, p. 774)
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79RB8
(10061-SD)
, Mc Grath
, Long. 155 deg. 09'23"W, Lat. 62 deg. 04'33"N. NE1/4, NW 1/4, NE1/4, NW1/4 sec. 21, T23N, R32W. Approximately 3.0 m (10 ft) thick silicified fossil horizon, the top of which is 101.5 m (333 ft) below the top of the Cheeneetnuk Limestone. (description from Rigby and Blodgett, 1983, p. 774)
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79RB11
(10095-SD)
, Mc Grath
, Long. 155 deg. 09'25"W, Lat. 62 deg.04'40"N. NE1/4, SW1/4, SE1/4, SW1/4 sec. 16, T23N, R32W. Silicified fossil horizon, 25.3 (83 ft) below the top of the Cheeneetnuk Limestone. (description from Rigby and Blodgett, 1983, p. 774)
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79RB12
(10063-SD)
, Mc Grath
, Long. 155 deg. 07'27"W., Lat. 62 deg. 05'15"N. SE1/4,SW1/4,NE1/4,NW1/4, sec. 15, T23N, R32W, McGrath A-5 quadrangle. Rubble crop of silicified fossils just above a band of prominent white dolomite on the south side of an east-dipping slope. (description from Poncet and Blodgett, 1987, p. 1270-1271)
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Tetracoral (probably Neostringophyllum)
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