Usage:
Ochoan Series*
A provincial chronostratigraphic term.
Geologic age:
Late Permian (Lopingian)*
Type section, locality, area and/or origin of name:
Type section has been penetrated by many wells. Named from Ochoa Post Office, in T. 24 S., R. 34 E., Lea Co., NM. Outcrops of beds of Ochoa age are found in Eddy Co., NM, and Culberson Co., west-central TX. These outcrops are not representative of thick sequence found in subsurface type locality (Adams and others, 1939).
AAPG geologic province:
North America*
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 ([ ]).