An iron-rich sandstone or lean "iron ore," of deep-red color, lying about 175 ft above the base of Rose Hill formation in western MD here referred to as Cresaptown iron sandstone. Underlies upper shale beds of Rose Hill. Some of Cresaptown beds are distinctly oolitic. Interbedded with the iron sandstone are variable amounts of shale. Contains fossils. Thickness 30 ft at Pinto and 10 ft at Cumberland, Allegany Co. Age is Silurian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
Unit referred to as Cresaptown iron sandstone member of Clinton shale or formation.
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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