Passive margins: U.S. Geological Survey Line 19 across the Georges Bank basin

Kim D. Klitgord; John S. Schlee; John A. Grow

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Passive margins: U.S. Geological Survey Line 19 across the Georges Bank basin

Kim D. Klitgord·John S. Schlee·John A. Grow

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Abstract

Georges Bank is a shallow part of the Atlantic continental shelf southeast of New England (Emery and Uchupi, 1972, 1984). This bank, however, is merely the upper surface of several sedimentary basins overlying a block-faulted basement of igneous and metamorphic crystalline rock. Sedimentary rock forms a seaward-thickening cover that has accumulated in one main depocenter and several ancillary depressions, adjacent to shallow basement platforms of paleozoic and older crystalline rock. Georges Bank basin contains a thickness of sedimentary rock greater than 10 km, whereas the basement platforms that flank the basin are areas of thin sediment accumulation (less than 5 km).

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Kim D. Klitgord, John S. Schlee, John A. Grow. 1987. Passive margins: U.S. Geological Survey Line 19 across the Georges Bank basin. https://pubs.usgs.gov/publication/70137753

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