Abstract
About 1,600 km of continuous seismic (sparker) profiles were recorded in the area of Georges Bank during 1963 and 1964. Structural cross sections and a structural contour map were drawn from the recordings. These materials, supplemented by soundings and bottom samples, indicate that the bank is underlain by Cretaceous, Tertiary, and Pleistocene strata that dip gently seaward and steepen near the continental slope. Unconformities are present between each of these main stratigraphic sequences. The bank is clearly a northeasterly extension of the continental shelf that borders southern New England. It has the form of a cuesta that is bounded on its landward side by the Gulf of Maine, which was deeply eroded by glaciers and possibly by preglacial streams.
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