Ultramafic and Gabbroic Rocks

Mixed metagabbro, serpentinite, metapyroxenite, and actinolite-, chlorite-, and epidote-bearing schists.
State Maryland
Name Ultramafic and Gabbroic Rocks
Geologic age Early Paleozoic (?)
Lithologic constituents
Major
Metamorphic > Metaigneous > Serpentinite
Metamorphic > Metaigneous > Metaintrusive > Metagabbro
Metamorphic > Metaigneous > Metaintrusive > Metaultramafic > Metapyroxenite
Minor
Metamorphic > Schist > Amphibole-schistactinolite-, chlorite-, and epidote-bearing schists
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