Usage:
D-Cross Tongue of Mancos Shale (NM*)
Geologic age:
Late Cretaceous (Turonian)*
Type section, locality, area and/or origin of name:
Named from exposures at D-Cross Mountain, in secs. 17 and 18, T. 3 N., R. 8 W., [D Cross Mountain 7.5-min quadrangle], Socorro Co., central NM (Dane and others, 1957).
AAPG geologic province:
Orogrande basin*
San Juan 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 ([ ]).