Reference Detail of

Report on Referred Fossils
Edit Reference Add/Edit Sample Sample List Show Map
Stratigraphic range: Jurassic?
Kinds of fossils: Mollusks
Quadrangle or area: Russian Mission, and Kwiguk quads., SW Alaska
Shipment No.: A-60-3M
Referred by: Hoare, Joseph M.
Report prepared by: Imlay, Ralph W.
Date: 09/20/1960


***
Brief statement of problem and remarks (from collector):
Problem is to determine the age of the rocks from which the fossils were collectied.
User Note module to be added
60AHr72 , Russian Mission , Location determined on Russian Mission 1:250,000 map, 1950 Edition. Coords: 0.6, 10.3, Long. 161 deg. 55.5', lat. 61 deg. 35.5'. Near the downstream end of prominent rock bluff on east side Yukon River about 3.5 river miles downstream from village of Ohogamiut. Fossils occur in thin-bedded olive-green tuff or siliceous siltstone interbedded with medium to coarse-grained gray and gray green sandstone.
Cylindroteuthis sp.
60AHr75 (Mesozoic loc. 27716) , Russian Mission , Location determined on Russian Mission 1:250,000 map, 1950 Edition. Coords: 0.65, 11.35, Long. 161 deg. 55.5', lat. 61 deg. 39'. On the east bank of Yukon River about 7 miles N25W from village of Ohogamiut. Few fossil fragments occur in the talus at foot of low rock cliffs. Rock is chiefly thick-bedded, fine-grained olive-green siliceous siltstone or tuff with a few coarse-grained beds. (from E&R report); USGS Mesozoic loc. 27716. East bank of Yukon River about 7 miles N. 25° W. from village of Ohogament, coordinates 0.65, 11.35, lat 61°39' N., long 161°55.5' W., Russian Mission quadrangle, Kuskokwim region. Stephanoceras? sp. Probably Middle Jurassic. (description from Imlay and Detterman, 1973, p. 23); [USGS Mes. Cat.: 27716. 60AHr75. Jurassic? Russian Mission 1:250,000 Map. (1950). Coords. 0.65, 11.35. Long. 161°55.5' W., Lat. 61°39' N. East bank of Yukon River about 7 miles N25°W from village of Ohogamut, Alaska. Fossils found in talus at foot of low cliffs. Thick bedded siltst. or tuff with a few coarse grained beds. Coll. by J.M. Hoare, 1960.]
fragmentary ammontes
60AHr97 , Kwiguk , Location determined on Kwiguk 1:250,000 map, 1959 Edition. Coords: 14.6, 1.0, Long. 163 deg. 13.5', lat. 62 deg. 2.5'. About 2.3 miles downstream from St. Mary's Mission on north bank of Andreafsky River. Fossil pelecypods occur in fragment of sandstone derived from nearby outcrops. Fossils occur in very hard, thick-bedded, medium-grained, gray, calcareous sandstone. Ripple marks and carbonized plant hash also characterized the rock.
Inoceramus lucifer Eichwald