Hampshire Formation

Interbedded red shale, red mudstone, and red to brown cross-bedded siltstone and sandstone; some thin green shale; greenish-gray sandstone and shale toward top; fragmentary plant fossils; thickness 1,400 to 2,000 feet in west, increases to 3,800 feet in east.
State Maryland
Name Hampshire Formation
Geologic age Devonian
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shalered and some green shale
Sedimentary > Clastic > Sandstonered to brown, cross-bedded
Minor
Sedimentary > Clastic > Mudstonered mudstone
Sedimentary > Clastic > Siltstonered to brown, cross-bedded
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 Allegany - Garrett - Washington