U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Moffat Trail

Usage:

Moffat Trail Limestone Member of Amsden Formation (WY*)


Geologic age:

Mississippian, Late*
Chesterian, middle*
Chesterian, late*


Type section, locality, area and/or origin of name:

Type section: on ridge north of Moffat Trail, in NE/4 sec. 3, T. 33 N., R. 117 W., Lincoln Co., WY (Sando and others, 1975).


AAPG geologic province:

Yellowstone province*
Green 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 ([ ]).