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National Geologic Map Database

Geologic Unit: Ochoan

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 usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).