Usage:
San Jon Formation (NM-recognized locally in Quay Co.)
Geologic age:
Pleistocene, late
Type section, locality, area and/or origin of name:
Type exposure: San Jon site, approximately 10 mi south of San Jon, Quay Co., eastern NM (Sheldon, 1950).
AAPG geologic province:
Palo Duro 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 ([ ]).