Reference Detail of

Report on Referred Fossils
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Stratigraphic range: Lower Triassic
Kinds of fossils: Mollusks
Quadrangle or area: Mt. Michelson, Alaska
Shipment No.: A-69-18
Referred by: Detterman, Robert L.
Report prepared by: Silberling, Norman J.
Date: 11/17/1969

The following of your collections from the Ivishak Member of the Sadlerochit Formation were forwarded to me by Tom Dutro.

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69ADt26 , Mt Michelson , Tributary of Ivishak River, 15.5 miles S. 30 deg. W of Cashe One Lake. Concretions in black, silty, ferruginous shale; position in section unknown.
Ophiceras commune Spath
69ADt27 , Mt Michelson , Tributary of Ivishak River, 15 miles S. 30 deg. W of Cashe One Lake. Concretions in black, silty, ferruginous shale; about 500-600 feet above base of formation.
Indet. pectenacid pelecypod
69ADt35i-unit11 , Mt Michelson , S. side Sadlerochit Mts., 5.2 miles N. 85 deg E. of Katakturuk canyon. Thin-bedded, yellow-brown siltstone, 40-50 feet below top of formation.
Indet. impressions of pelecypods
69ADt64-unit8 , Mt Michelson , East end Shublik Mts., 8 miles west of Fire Creek-Sadlerochit R. Junction. Massive, pale red, fine grained sandstone, about 450 feet above base of formation.
Indet. impressions of pelecypods
Lingula sp.
69ADt64-unit10 , Mt Michelson , East end Shublik Mts., 8 miles west of Fire Creek-Sadlerochit R. Junction. Thin- to medium-bedded fine grained, brown sandstone, about 600 feet above base of formation.
Indet. impressions of pelecypods
Euflemingites romunderi Tozer
69ADt65 , Mt Michelson , Snow Creek, 4.4 miles N. 70 deg. W. of Okiotak Peak.
Indet. impressions of pelecypods
69ADt72 , Mt Michelson , Oldman Creek, 4 miles west of Okpiklak Lake. Thin-bedded, fine grained quartzite - upper part of formation.
Indet. impressions of a pectenacid pelecypod
Indet. impressions of an ammonite
69ADt159-unit5 , Mt Michelson , West end Sadlerochit Mts., 5.6 miles S. 70 deg E. of Red Hill. Thin bedded, fine grained, pale brown sandstone, about 300-400 feet above base.
Indet. impressions of pelecypods