Usage:
Anchor Mine Tongue of Mancos Shale (CO*,UT*)
Geologic age:
Late Cretaceous*
Type section, locality, area and/or origin of name:
Type locality considered to be at Anchor mines, nos. 1 and 2, [in Layton Wash, T. 8 S., R. 101 W., Ruby Lee 7.5-min quadrangle], Mesa Co., Book Cliffs coal field, western CO (Erdmann, 1934; GNC index card files, adopted Aug. 6, 1931).
AAPG geologic province:
Paradox basin*
Piceance 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 ([ ]).