Bedform distribution and inferred sand transport on Georges Bank, United States Atlantic continental shelf.

D.C. Twichell

doi:10.1111/j.1365-3091.1983.tb00703.x

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Bedform distribution and inferred sand transport on Georges Bank, United States Atlantic continental shelf.

D.C. Twichell

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Abstract

Four bedform provinces have been identified using sidescan-sonar and echo-sounding techniques: large sand waves superimposed on sand ridges, small sand waves, megaripples, and featureless seafloor. Sand-wave asymmetry and surface-sediment texture have been used to infer bedload transport paths and although the asymmetry of megaripples could not be determined, the occurrence of megaripples between the small sand-wave province and areas of featureless seafloor suggests a decreasing effectiveness of sand transport away from the bank crest. This sand dispersal pattern is further supported by the surface sediments which become progressively finer to the N and SW away from the crest of Georges Bank.-from Author

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Sedimentology Article

Source-reported bounding extent: 40° to 43° latitude; -70° to -66° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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BibTeX RIS

D.C. Twichell. 2006-06-14. Bedform distribution and inferred sand transport on Georges Bank, United States Atlantic continental shelf.. https://doi.org/10.1111/j.1365-3091.1983.tb00703.x

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