Peach Bottom Slate

Hard, bluish-black graphitic slate; thin beds of fine-grained black quartzite near base; apparent maximum thickness 1,000 feet.
State Maryland
Name Peach Bottom Slate
Geologic age Ordovician (?)
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > Slate
Incidental
Metamorphic > Metasedimentary > Metaclastic > Quartzite
References

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/.

NGMDB product
Counties Harford