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NGMDB

Geologic Unit: Moonstone

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*


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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