Usage:
Gibson Coal Member of Crevasse Canyon Formation (NM*)
Gibson Member of Crevasse Canyon Formation of Mesaverde Group (NM)
Geologic age:
Late Cretaceous (Santonian)*
Type section, locality, area and/or origin of name:
Named from village of Gibson, McKinley Co., Gallup-Zuni basin, northwestern NM, for many years the center of mining operations in the coals of this member (Sears, 1925).
AAPG geologic province:
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 ([ ]).