|Name||Hook Mt. Basalt|
|Geologic age||Lower Jurassic|
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow)Light- to dark-greenish-gray, medium- to coarse-grained, amygdaloidal basalt composed of plagioclase (typically An65 and commonly porphyritic), clinopyroxene (augite and pigeonite), and iron-titanium oxides such as magnetite and ilmenite.
|Comments||Newark Supergroup, Brunswick Group (Lyttle and Epstein, 1987).|
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.
Drake, Avery A. Jr.,Volkert, Richard, A., Monteverde, Donald H., Herman, Gregory C., Houghton,Hugh F., Parker, Ronald A., and Dalton, Richard F., 1996, Bedrock Geologic Map of Northern New Jersey: U.S. Geological Survey Miscellanenous Investigations Map I-2540-A, 4 cross sections, 2 sheets, size 56x40; 58x41, scale 1:100.000.
Olsen, P.E., 1980, The latest Triassic and Early Jurassic formations of the Newark basin (eastern North America, Newark Supergroup); stratigraphy, structure, and correlation: New Jersey Academy of Science Bulletin, v. 25, no. 2, p. 25-51.
Lyttle, P.T., and Epstein, J.B., 1987, Geologic map of the Newark 1 x 2 degree quadrangle, New Jersey, Pennsylvania, and New York: U.S. Geological Survey Miscellaneous Investigations Series Map I-1715, scale 1:250,00.
Olsen, P.E., Schlische, R.W., and Gore, P.J.W., eds., 1989, Sedimentation and basin analysis in siliciclastic rock sequences; volume 2, tectonic, depositional, and paleoecological history of the early Mesozoic rift basins, eastern North America: Washington, D.C., American Geophysical Union, 28th International Geological Congress, Field Trip Guidebook T351, 174 p.
|Counties||Essex - Morris - Passaic - Somerset|