Usage:
Crevasse Canyon Formation (AZ*,NM*)
Crevasse Canyon Formation of Mesaverde Group (AZ,NM)
Subunits:
(alphabetical) --all in NM: Bartlett Member or [/?]Bartlett Barren Member*, Borrego Pass Lentil*, Dalton Sandstone Member*, Dilco Coal Member* or Dilco Member, Gibson Coal Member* or Gibson Member, Stray sandstone member (informal)*, Torrivio Sandstone Member.
Geologic age:
Late Cretaceous (Coniacian to Santonian)*
Type section, locality, area and/or origin of name:
Type locality: on north fork of Catron Creek, about 3 mi southwest of mouth of Crevasse Canyon, McKinley Co., NM (Allen and Balk, 1954).
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 ([ ]).