Effective immediately, the Wyoming State Geological Survey will remain open for business,
but is asking the public to use phone and email communications as much as possible.
Please contact the WSGS at 307-766-2286 or wsgs-info@wyo.gov
Thank you for your understanding and cooperation.

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Stratigraphy


The stratigraphy of Wyoming is summarized in WSGS Map Series 41, the Stratigraphic Chart Showing Phanerozoic Nomenclature for the State of Wyoming (MS-41). Stratigraphic units on this chart are correlated along three generally west-east lines crossing mountains and basins.


Stratigraphic Chart Showing Phanerozoic Nomenclature for the State of Wyoming (MS-41) Arikaree Formation overlying the Brule Member of the White River Formation, Goshen Rim, southeast Wyoming.































Wyoming's Upper Cretaceous stratigraphy is detailed in WSGS OFR 2017-3, the Correlation of the Upper Cretaceous Strata of Wyoming (OFR 2017-3).

Correlation Of The Upper Cretaceous Strata Of Wyoming (OFR 2017-3) Cloverly Formation
































Contact:
Seth Wittke (307) 766-2286 Ext. 244