Usage:
Castile Formation (NM*,TX*)
Castile Gypsum (NM*,TX*)
Castile Formation of [†]Ochoa Group (NM,TX)
(†Ochoa has been used as a provincial chronostratigraphic term (Ochoan Series) for some time. To prevent confusion, the use of Ochoa as a lithostratigraphic term should be avoided. Not used by the USGS.)
Geologic age:
Permian, Late*
Ochoan*
Type section, locality, area and/or origin of name:
Named from Castile Spring [no longer exists] which is in midst of the gypsum, 12 mi south of the NM-TX line in El Paso Co. [now in Culberson Co.], TX (Richardson, 1904).
AAPG geologic province:
Permian 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 ([ ]).