Cover Image

Map showing contours on top of the upper Cretaceous Mowry Shale, Powder River Basin, Wyoming and Montana /

Bibliographic Details
Corporate Author: Geological Survey (U.S.)
Other Authors: Crysdale, Bonnie L.
Format: Government Document Map
Language:English
Published: Reston, Va. : The Survey ; 1991.
Series:Miscellaneous field studies ; map MF-2140-D.
Subjects:
Geology > Powder River Basin (Wyo. and Mont.) > Maps.
Geology, Stratigraphic > Cretaceous > Maps.
Description
Item Description:Includes text, bibliography, cross section, block diagram, stratigraphic column, and index map.
Cartographic material.
Physical Description:1 map ; 71 x 58 cm., on sheet 94 x 107 cm., folded in envelope 30 x 24 cm.