Title: 87șSr/86șSr and geochemical variations in the Pennsylvanian and Permian nonmarine and marine limestones of Southeastern Ohio, Northwestern West Virginia and Southwestern Pennsylvania
Subjects: Geology, Stratigraphic, Isotopes, Limestone, Stratigraphic Geology, Strontium
Places: Ohio, Pennsylvania, West Virginia
Time periods: Pennsylvanian, Permian