Stratigraphy and sedimentology of the Paleocene Fort Union Formation along the Powder River, Montana and Wyoming part of MT Field Guides
The Paleocene Fort Union Formation in the Powder River Basin in Montana and Wyoming and adjoining areas contains a large number of very thick, closely spaced coal beds that make up some of the largest coal reserves in the United States. The main purpose of this field guide is to provide a knowledge of the stratigraphy, fluvial facies sequences, and depositional environments of portions of this coal resource at three main localities along the Powder River. Field data from measured sections and outcrop descriptions are synthesized into a depositional model for the origin of the Tongue River Member of the Powder River Formation.