Usage:
Flechado Formation (NM*)
Geologic age:
Pennsylvanian, Early*
Morrowan*
Pennsylvanian, Middle*
Atokan*
Desmoinesian*
Type section, locality, area and/or origin of name:
Type section: in bluffs on north side of Rio Pueblo Valley, starting at base of Pennsylvanian near point where Tio Maes Creek enters valley, 3 mi east of junction of NM Highway 3 and NM Highway 75, Taos Co., NM [is only the lower 2,500 ft of section]. Named from Flechado Creek (Sutherland, 1963).
AAPG geologic province:
San Luis basin*
Las Vegas-Raton 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 ([ ]).