Sedimentary > Carbonate > Dolostone
Sedimentary > Carbonate > Limestone
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Siltstone
Sedimentary > Clastic > Sandstone
|Comments||secondary unit description from USGS Geologic Names lexicon (ref MD004): Revised the Waynesboro Formation in MD, PA and WV to include the (ascending) Red Run, Cavetown, and Chewsville Members. The Red Run Member consists of interbedded sandstone and sandy, dolomitic limestone (100 to 125 feet thick). The Cavetown Member consists of interbedded dolomite, dolomitic limestone, and a few siliciclastic beds (500 to 600 feet thick). The Chewsville Member consists of interbedded maroon shale, sandstone, dolomitic limestone, and dolomite (100 to 150 feet thick). The Waynesboro overlies the Tomstown Formation and underlies the Elbrook Formation. Age of the Waynesboro is considered Early Cambrian. Source: GNU records (USGS DDS-6; Reston GNULEX).|
Cleaves, E.T., Edwards, J., Jr., and Glaser, J.D., 1968, Geologic Map of Maryland: Maryland Geological Survey, Baltimore, Maryland, scale 1:250,000.
In 1995 the Water Resources Division of the U.S. Geological Survey digitized the geologic map of Maryland from the 1968 paper map (Reference MD001). Information about products from the Maryland Geological Survey can be found at http://www.mgs.md.gov/.
USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/