Usage:
Moonstone Formation (WY*)
Geologic age:
Tertiary*
Miocene*
Type section, locality, area and/or origin of name:
Type section: in SW/4 sec. 4, T. 30 N., R. 89 W., south to highest bed in Vice Pocket, in NE/4 NE/4 SE/4 sec. 33, T. 30 N., R. 89 W., Natrona Co., central WY. Named from Moonstone, a smooth monolith of Precambrian granite, against which the Moonstone Formation was deposited (Love, 1961).
AAPG geologic province:
Wind River 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 ([ ]).