Usage:
/Macho Member of Tererro Formation of Arroyo Penasco Group (NM*)
[Preoccupied. Name previously applied to Macho Pyroxene Andesite by Jicha, Jr. (1954) also in NM]
Geologic age:
Middle Mississippian (Visean; Meramecian)*
Type section, locality, area and/or origin of name:
Type section: on a steeply sloping hill west of church at El Macho, north side Macho Creek west of confluence with Pecos River, San Miguel Co., NM. Origin of name not stated by authors, but probably named from Macho Creek (Baltz and Read, 1960).
AAPG geologic province:
Las Vegas-Raton basin*
Palo Duro basin*
San Luis basin*
Estancia 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 ([ ]).