. Smithsonian miscellaneous collections . n sediment during the con-tinuous back and forth transfer of sand grains between surf zoneand dunes produces only subtle differences between Sable Islandbeach and dune sands. Distinguishing between beach and dune sandsis made more difficult by the fact that sediments in this region,largely of relict Pleistocene origin, were moulded by a complexof aeolian, glacial, and fluvial processes in the recent past. Theseearlier processes, so important when Sable Island Bank was emergentduring lower stands of sea level, left an imprint on sediments now NO. 7 SEDI
. Smithsonian miscellaneous collections . n sediment during the con-tinuous back and forth transfer of sand grains between surf zoneand dunes produces only subtle differences between Sable Islandbeach and dune sands. Distinguishing between beach and dune sandsis made more difficult by the fact that sediments in this region,largely of relict Pleistocene origin, were moulded by a complexof aeolian, glacial, and fluvial processes in the recent past. Theseearlier processes, so important when Sable Island Bank was emergentduring lower stands of sea level, left an imprint on sediments now NO. 7 SEDIMENT TRANSPORT, SABLE ISLAND JAMES & STANLEY 21 affected by a new set of depositional conditions (Stanley and Cok,1965). Certain selected mineralogical and textural parameters can be usedfor this purpose. A plot of mean grain size versus sorting provesto be the most valuable method of differentiation in high energyenvironments present on the northern margin of the island. In lower NORTH ISLAND + backbeoch V * + •^ I +V\ / £X 1 1 1. X south beoch flats
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