Usage:
Allen Valley Shale of Indianola Group (UT*)
Geologic age:
Late Cretaceous (Turonian)*
Type section, locality, area and/or origin of name:
Type locality: at base of Wasatch Plateau in Allen Valley, about 3 mi southwest of Manti, Sanpete Co., central UT. Top and base are well exposed in Salina Canyon, about 5 mi east of Salina (Spieker, 1946).
AAPG geologic province:
Wasatch uplift*
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 ([ ]).