Usage:
Navajo Sandstone of Glen Canyon Group (AZ*,CO*,NM*,UT*)
Navajo Sandstone (NV)
Subunits:
(alphabetical): Lamb Point Tongue (UT*), Shurtz Tongue (UT*).
Geologic age:
Controversial.
Triassic(?)* or Early Jurassic*
Type section, locality, area and/or origin of name:
Named from the "Navajo Country" of AZ, UT, and NM (Gregory, 1917).
AAPG geologic province:
Black Mesa basin*
Great Basin province*
Paradox basin*
Piceance basin*
Plateau sedimentary province*
San Juan basin*
Uinta basin*
Uinta uplift*
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 ([ ]).