Geologic map showing thickness of sedimentary rocks from groundsurface to the top of the upper Cretaceous Pierre Shale in the north half of the Powder River Basin, southeastern Montana and northeastern Wyoming

I-2433-A Geologic map showing thickness of sedimentary rocks from groundsurface to the top of the upper Cretaceous Pierre Shale in the north half of the Powder River Basin, southeastern Montana and northeastern Wyoming, scale 1:24,000, 1994, ISBN 978-0-607-79591-2 Keywords: Powder river basin, Stratigraphic Geology, Stratigraphy, Geologic maps, Sedimentology, Sedimentary and carbonate rocks