All Maps
Explore all USGS Maps and refine your search by type, topic, year, location, and advanced search.
Filter Total Items: 9587
Map showing contours on top of the upper Cretaceous Mowry Shale, Powder River basin, Wyoming and Montana Map showing contours on top of the upper Cretaceous Mowry Shale, Powder River basin, Wyoming and Montana
This map is one in a series of U.S. Geological Survey Miscellaneous Field Studies (MF) maps showing computer-generated structure contours, isopachs, and cross sections of selected formations in the Powder River basin, Wyoming and Montana. The map and cross sections were constructed from information stored in a U.S. Geological Survey Evolution of Sedimentary Basins data base. This data...