Usage:
Allen Hollow Shale Member of Frontier Formation (UT,WY)
Originally spelled Allan Hollow.
Geologic age:
Late Cretaceous (Turonian)
Type section, locality, area and/or origin of name:
Named from typical exposures in Allan Hollow [now Allen Hollow], immediately northeast of Coalville, Summit Co., northeastern UT. Allan Hollow is a strike valley between northwest dip slope of Coalville member and overlying cliff of Oyster Ridge sandstone (Hale, 1960).
AAPG geologic province:
Uinta uplift
Green River basin
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).