Usage:
Petrified Forest Member of Chinle Formation (AZ*,CO*,NM*,NV*,UT*)
Subunits:
(alphabetical): Capitol Reef Bed (UT*), Correo Sandstone Bed (NM*), Sonsela Sandstone Bed (AZ*,NM*).
Geologic age:
Late Triassic*
Type section, locality, area and/or origin of name:
Named from the Petrified Forest, Navajo and Apache Cos., northeastern AZ (Gregory, 1950).
AAPG geologic province:
Basin-and-Range province*
Black Mesa basin*
Great Basin province*
Orogrande basin*
Paradox basin*
Plateau sedimentary province*
San Juan 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 ([ ]).