Delaware River: Evidence for its former extension to Wilmington Submarine Canyon

D.C. Twichell; H.J. Knebel; D. W. Folger

doi:10.1126/science.195.4277.483

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Delaware River: Evidence for its former extension to Wilmington Submarine Canyon

D.C. Twichell·H.J. Knebel·D. W. Folger

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Abstract

Seismic-reflection profiles indicate that during the Pleistocene the Delaware River flowed across the continental shelf east of Delaware Bay and emptied into Wilmington Submarine Canyon. The ancestral valley (width, 3 to 8 kilometers; relief, 10 to 30 meters) is buried, is not reflected in the surface topography, and probably predates the formation of the present canyon head.

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Source-reported bounding extent: 38.43058282173703° to 39.7369030436918° latitude; -75.77418738436643° to -74.88970281894306° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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D.C. Twichell, H.J. Knebel, D. W. Folger. 1977. Delaware River: Evidence for its former extension to Wilmington Submarine Canyon. https://doi.org/10.1126/science.195.4277.483

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