Probable Permian age of the Rampart Group, central Alaska : fossil collections and rock samples from a limestone bed within the volcanic sequence of the Rampart Group show that the group is probably Permian in age / by W.P. Brosgé [and three others].
Publication Info.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969.
Fossil collections and rock samples from a limestone bed within the volcanic sequence of the Rampart Group show that the group is probably Permian in age