1. Stratigraphic framework of Cambrian and Ordovician rocks in the Appalachian Basin from Sequatchie County, Tennessee, through eastern Kentucky, to Mingo County, West Virginia Author/Creator: Ryder, Robert T. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, Colo. : For sale by U.S. Geological Survey, Information Services, 2008 Resource Type: Map Access & Availability: Loading
2. Stratigraphic framework of Cambrian and Ordovician rocks in the Appalachian Basin from Sequatchie County, Tennessee, through eastern Kentucky, to Mingo County, West Virginia Author/Creator: Ryder, Robert T. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, Colo. : For sale by U.S. Geological Survey, Information Services, 2008 Resource Type: Map Access & Availability: Loading
3. Stratigraphic framework and depositional sequences in the Lower Silurian regional oil and gas accumulation, Appalachian basin, from Licking County, Ohio, to Fayette County, West Virginia Author/Creator: Ryder, Robert T. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : U.S. Geological Survey, Information Services [distributor], 2006 Resource Type: Map Access & Availability: Loading
4. Stratigraphic framework and depositional sequences in the lower Silurian regional oil and gas accumulation, Appalachian Basin, from Jackson County, Ohio, through northwestern Pennsylvania, to Orleans County, New York Author/Creator: Ryder, Robert T. Publication/Creation: Denver, CO : Information Services [distributor]. Resource Type: Map Access & Availability: Loading
5. Geologic cross section I-I' through the Appalachian Basin from the eastern margin of the Illinois Basin, Jefferson County, Kentucky, to the Valley and Ridge Province, Scott County, Virginia Author/Creator: Geological Survey (U.S.), issuing body Publication/Creation: Reston, Va. : U.S. Geological Survey, 2015 Resource Type: Map Access & Availability: Loading
6. Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian Basin from Richland County, Ohio to Rockingham County, Virginia Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
7. Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian Basin from Lake County, Ohio, to Juniata County, Pennsylvania Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
8. Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian Basin from Fayette County, Ohio to Botetourt County, Virginia Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Information Services Resource Type: Map Access & Availability: Loading