No current usage.
(†Agathla Shale (AZ) replaced with Moenkopi Formation. See Moenkopi.)
Early Triassic
Notable exposures near Agathla Peak, northern part of Navajo Co., northeastern AZ (Hager, 1924).
Plateau sedimentary province
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 ([ ]).