mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1984]<YG1-U-W.Va-2.4-4959-3-NE>
mapped, edited, and published by the Geological Survey in cooperation with Commonwealth of Virginia Division of Mineral Resources.Geological Survey[1984]<YG1-U-W.Va-2.4-4858-4-NE>
by William S. Henika and Paul A. ThayerCommonwealth of Virginia, Department of Conservation and Economic Development, Division of Mineral Resources1983
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1979]<YG1-U-W.Va-2.4-5261-4-SW>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1979]<YG1-U-W.Va-2.4-5161-2-SW>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1979]<YG1-U-W.Va-2.4-4858-1-NW>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1979]<YG1-U-W.Va-2.4-5362-4-SW>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1978]<YG1-U-W.Va-2.4-4858-4-SW>
mapped, edited, and published by the Geological Survey in cooperation with Kentucky Geological Survey and Virginia Division of Mineral Resources.Geological Survey[1978]<YG1-U-Ky-2.4-4558-1-NW>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1976]<YG1-U-W.Va-2.4-5261-1-NW>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1975]<YG1-U-W.Va-2.4-5262-2-SE>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1975]<YG1-U-W.Va-2.4-5362-4-NE>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1970]<YG1-U-W.Va-2.4-5161-2-NW>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1969]<YG1-U-W.Va-2.4-5161-1-SE>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1968]<YG1-U-W.Va-2.4-4959-3-SE>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1968]<YG1-U-W.Va-2.4-5261-4-NE>
mapped, edited, and published by the Geological Survey in cooperation with Virginia Division of Mineral Resources.Geological Survey[1967]<YG1-U-W.Va-2.4-5362-1-NW>