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National Geologic Map Database

NGMDB

Geologic Unit: Petrified Forest

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*


NGMDB

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 ([ ]).

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Page Last Modified: Tue Jun 3 17:22:11 2014