of
Sample: Sample No. 77RM017C
Locality: Field No. 77RM017C
Description: From a locality along the southern margin of Fairweather Glacier, five miles due east (inland) from Cape Fairweather, lituya District, southeastern Alaska. The outcrop is composed of graywacke and silstone interlayered in beds from 2 mm to 10 m thick; beds are oriented N33W, dip 42 E, and are not overturned. Vertical trace fossil burrows occur, as do carbonaceous inclusions.
Location: Alaska Quadrangle: Mt Fairweather D-6
Lat.: 58o48'00 " Long.: 137o48'07 "
Reference
Title: Report on Referred Fossils ,  1977 (08/29)
Report by: Louie Marincovich , Jr.
Referred by: R. P. Morrell
Age: Late Miocene
Comment:The section from which the fossils come was extensively collected, measured and described by George Plafker, myself and others in July 1975. My report on the megafossils was completed and sent to Plafker on June 23, 1976. The entire section, which is 442 meters thick, is of late Miocene age as shown by its mollusks. Nearly all of the mollusk species are extinct, but several of the genera have resticted bathymetric ranges in the modern northeastern Pacific and suggest water depths of about 20 to 40 meters. The presence of many articulated and closed bivalve shells throught the section indicates minimal post-mortem transport. The fauna clearly indicates cold water at both the generic and specific levels.
Occurrence(s)
No. Group Name Qty Notes
1 Snails Natica (Cryptonatica) clausa Broderip & Sowerby 1
2 Snails Territella (Neohaustator) hamiltonensis Clark 2 fragments
3 Bivalves Periploma (Aelga) besshoense (Yokoyama) 1 articulated
4 Bivalves Clinocardium sp. 1 valve