| State | New Jersey |
|---|---|
| Name | Amphibolite |
| Geologic age | Middle Proterozoic |
| Lithologic constituents |
Major
Metamorphic > AmphiboliteAmphibolite - Medium-grained, very dark gray to black, and foliated; consists of hornblende and andesine.
Minor
Igneous > Plutonic > Granitic > Leucocratic-granitic > PegmatiteSome exposures exhibit crosscutting bodies of white plagioclase pegmatite
|
| Comments | Rocks of the Trenton prong |
| References | Dalton, R.F., Herman, G.C., Monteverde, D.H., Pristas, R.S., Sugarman, P.J., and Volkert, R.A., 1999, New Jersey Department of Environmental Protection, Bedrock Geology and Topographic Base Maps of New Jersey: New Jersey Geological Survey CD Series CD 00-1; ARC/INFO (v. 7.1), scale 1:100,000.Owens, James P., Sugarman, Peter J., Sohl, Norman F., Parker, Ronald A., Houghton, Hugh F., Volkert, Richard A., Drake, Avery A., Jr., and Orndorff, Randall C., 1998, Bedrock Geologic Map of Central and Southern New Jersey: U.S. Geological Survey Miscellaneous Investigations Series Map I-2540-B, 8 cross sections, 4 sheets, each size 58x41, scale 1:100,000.https://pubs.er.usgs.gov/publication/i2540B |
| NGMDB product | |
| Counties | Mercer |