The Tertiary sedimentary and structural basins in southwestern Wyoming have been discussed in geologic literature for more than 100 years; yet as of 1961, no consistent terminology or boundary delineation has been adopted for three of them—the Green River basin west of the Rock Springs uplift, the Great Divide basin northeast of the uplift, and the Washakie basin southeast of it. The need to adopt the most logical names for these basins and to designate the areas that these names should represent is urgent because of the rapidly increasing number of publications that describe the stratigraphy, structure, paleontology, and economic...

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