Stratigraphy, Structural Geology, and Ductile- and Brittle Faults of the New York City Area
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چکیده
Fieldand petrographic studies of the Paleozoic metamorphic rocks of New York City suggest a new interpretation of the stratigraphy and structure of the region and has delineated a number of ductileand brittle faults. The belt of rocks originally lumped together as the Manhattan Schist is now interpreted to consist of three mappable units structurally imbricated by two major ductile faults, the St. Nicholas thrust and Cameron's Line. NEand NW-trending brittle faults cut the ductile faults and metamorphic tectonites. Future seismicity may be concentrated along the NW-trending faults which, indeed, show the greatest amount of offset.
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