Upper Gilbert sandstone in Kanawha formation described as grayish white, massive, medium-grained and micaceous. Thickness 40 to 50 ft. Lies 1 to 10 ft below Lower War Eagle coal and 30 to 50 ft above Glenalum Tunnel coal in study area. Lower Gilbert sandstone is massive, grayish white, very hard and arenaceous. Thickness 50 to 80 ft. Underlies Glenalum Tunnel coal. Named for Gilbert, Mingo Co., southern WV.
Source: GNU records (USGS DDS-6; Reston GNULEX).
In Greenbrier Co., Lower Gilbert sandstone is massive, grayish-white, coarse grained, and 30 to 80 ft thick. Overlies Gilbert shale. In Pottsville series. Upper Gilbert sandstone not present in study area.
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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