Usage:
Johnson Gap Formation (CO*,NM*)
Geologic age:
Triassic(?)*
Triassic, Late
Norian
Type section, locality, area and/or origin of name:
Type section: 3 mi west of Torres, in secs. 19 and 20, T. 34 S., R. 69 E., Las Animas Co., CO. Named from exposures in water gap of Johnson Gap (Johnson and Baltz, 1960).
AAPG geologic province:
Las Vegas-Raton 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 ([ ]).