Usage:
No current usage.
(Rocks of †Fierro Limestone (NM) reallocated to Abo Redbeds, Syrena Formation, Oswaldo Formation, and Lake Valley Limestone. See Abo, Syrena, Oswaldo, and Lake Valley.)
Geologic age:
Mississippian to Permian
Type section, locality, area and/or origin of name:
Named from town of Fierro in northeast part of Silver City quadrangle, Grant Co., NM. Section measured in gulch west of Silver City, Silver City quadrangle, Grant Co., NM (Paige, 1916).
AAPG geologic province:
Basin-and-Range province
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 ([ ]).