Metagabbro and Amphibolite

Weakly to strongly lineated metagabbro and epidote amphibolite.
State Maryland
Name Metagabbro and Amphibolite
Geologic age Early Paleozoic (?)
Lithologic constituents
Metamorphic > Metaigneous > Metaintrusive > Metagabbro
Metamorphic > Amphiboliteepidote amphibolite

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

NGMDB product
Counties Anne Arundel - Baltimore - Cecil - Harford - Howard