Usage:
Tejon Formation (CA*)
Tejon Group (CA)
Subunits:
GROUP STATUS (alphabetical) --all in CA: Cozy Dell Formation or Cozy Dell Shale, Matilija Formation.
FORMATION STATUS (alphabetical) --all in CA: Cozy Dell Shale Member, Liveoak Shale Member*, Matilija Sandstone Member, Metralla Sandstone Member*, Point of Rocks Sandstone Member, Reed Canyon Siltstone Member*, Uvas Conglomerate Member*.
Geologic age:
early Tertiary (Eocene)*
Type section, locality, area and/or origin of name:
Named from occurrence in vicinity of Fort Tejon, Kern Co., western CA (US geologic names lexicons, USGS Bull. 896, 1200).
Type area: on north slope of Tehachapi Mountains at extreme south end of Joaquin Valley, between Pastoria Creek on the east and Tecuya Creek on the west (Marks, 1941).
AAPG geologic province:
San Joaquin 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 ([ ]).