Map of the Berea sand of southeastern Ohio, northern West Virginia, and southwestern Pennsylvania
Explore the source record for details and available documents.
Oil and Gas Investigation Map↗
Geology topics
R.D. Holt
Publications and source records attributed to R.D. Holt.
Map of the Second Berea sand in Gallia, Meigs, Athens, Morgan, and Muskingum Counties, Ohio
Explore the source record for details and available documents.
Oil and Gas Investigation Map↗
Map of the First Berea sand in southeastern Ohio and western West Virginia
Explore the source record for details and available documents.
Oil and Gas Investigation Map↗