Abstract

Correlation in the western North Atlantic Basin of deep-water seismic stratigraphy across a basement high within the New England Seamounts shows that the seismic sequence of the Nova Scotian rise is broadly similar to that off the United States. Time of seamount volcanism inferred from stratigraphic relations around the basement high is consistent with a hot-spot origin, but nearby stratigraphic data indicate that earlier and later eruptions occurred, suggesting lithospheric weakness that predisposed this area to volcanism. Patterns of Tertiary abyssal current erosion and sediment deposition were controlled by sea-floor morphology around the seamounts and interaction of abyssal currents with the Gulf Stream.

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