Stratigraphic cross section R-R' showing electric logs of upper Cretaceous and older rocks, Powder River Basin, Natrona, Converse, Niobrara, and Weston Counties, Wyoming
Stratigraphic cross section R-R' showing electric logs of upper Cretaceous and older rocks, Powder River Basin, Natrona, Converse, Niobrara, and Weston Counties, Wyoming