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

Geologic Unit: Ericson

Usage:

Ericson Sandstone of Mesaverde Group (CO*,UT*,WY*)
Ericson Formation of Mesaverde Group (UT*,WY*)


Subunits:

(alphabetical): /Canyon Creek Member (CO*,WY*), /Rusty zone (informal) of Ericson Formation (CO,WY), Trail Member (CO,WY).


Geologic age:

Late Cretaceous (Campanian)*


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

Not designated. Named from the old Ericson Ranch on Salt Wells Creek, in sec. 31, T. 16 N., R. 102 W., Sweetwater Co., WY (Sears, 1926).


AAPG geologic 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).