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National Geologic Map Database

Geologic Unit: Sussex

Usage:

Sussex Sandstone (WY)
Sussex Sandstone Member of Steele Shale (MT*,WY*)
Sussex Sandstone Member of Cody Shale (WY*)
Sussex Sandstone Bed of Gammon Member of Pierre Shale (WY*)
Sussex Sandstone Bed of Steele Member of Cody Shale (WY*)


Geologic age:

Late Cretaceous (Campanian)*


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

Not designated. Present in Powder River basin. Exposed at surface near Salt Creek oil field [Natrona Co., central WY]. Origin of name not stated by author, but probably named from Sussex oil field in [secs. 22 and 23], T. 42 N., R. 78 W., Johnson Co., WY (Wilson, 1951).


AAPG geologic province:

Powder 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 ([ ]).