Stratigraphic cross section showing upper Paleocene coal-bearing rocks of the Tongue River member of the Fort Union Formation in the Piney Canyon NE and Piney Canyon NW quadrangles, Campbell and Weston counties, southeastern Powder River basin, Wyoming
Stratigraphic cross section showing upper Paleocene coal-bearing rocks of the Tongue River member of the Fort Union Formation in the Piney Canyon NE and Piney Canyon NW quadrangles, Campbell and Weston counties, southeastern Powder River basin, Wyoming / U.S. Department of the Interior, U.S. Geological Survey ; by Frances Wahl Pierce and Edward A. Johnson
Series Titles:
Miscellaneous investigations series ; map I-2011 Miscellaneous investigations series (Geological Survey (U.S.)) ; map I-2011.