Baxter Shale

Usage of Geologic Unit Name:
Baxter Shale* of Montana Group
Cretaceous, Late*

Geologic Province:
Green River basin*
Areal Extent:

Type Locality:
Not designated. Named for Baxter, a station on the UPRR, T19N, R104W, Sweetwater Co, WY (Schultz, 1920).

Unit Name History:
Named basal formation of Montana Group (Schultz, 1920). Revised (Sears, 1926).



Schultz, A.R., 1920, Oil possibilities in and around Baxter basin, in the Rock Springs uplift, Sweetwater County, Wyoming: U.S. Geological Survey Bulletin, 702, 107 p.

Sears, J.D., 1926, Geology of the Baxter basin gas field, Sweetwater County, Wyoming, IN Contributions to economic geology (short papers and preliminary reports), 1925; Part 2, Mineral fuels: U.S. Geological Survey Bulletin, 781-B, p. B13-B27.

Sanguinetti, Rafael R, 2001, 3-D seismic-geologic model of the North La Barge Field, Sublette
County, Wyoming, 182 p. (Unpublished masters thesis).

Cobban, William A, 1995, Occurrences of the free-swimming Upper Cretaceous crinoids Uintacrinus and Marsupites in the Western Interior of the United States:
U. S. Geological Survey Bulletin 2113-B, p .C1-C6.

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Last modified: 5/14/2004