Usage:
Bayfield Gravel (CO*,NM*)
Geologic age:
Quaternary (Pleistocene)*
Type section, locality, area and/or origin of name:
Named from occurrence on several hills a few mi north of Bayfield, La Plata Co., southwestern CO (Atwood and Mather, 1932).
[Type locality stated to be on highest part of Animas City Mountain, 3.5 mi north of Durango, La Plata Co., southwestern CO (GNU records, USGS DDS-6; Denver GNULEX).]
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 ([ ]).