Uppermost Cretaceous and Tertiary stratigraphy of Fossil basin, southwestern Wyoming

Abstract

More than 7,000 feet of uppermost Cretaceous and Tertiary continental strata in the northern Fossil basin, along the southern part of the western Wyoming thrust belt, is here subdivided into newly defined formal and informal rock-stratigraphic units. Recognition of these units makes possible the dating of some thrust-fault movement, of the development of the Fossil structural basin, and of some later block faulting, as well as reinterpretations of the origins of the strata.