The findings of the earlier study are re-evaluated in the light of new information concerning the bathymetry of sampled areas on the continental shelf, the sub-ice topography of ice shelves and the Antarctic interior, and of sedimentary processes controlling the movement of palynomorphs on the sea floor. High concentrations of Permian, Jurassic to Early Cretaceous, and Cenozoic microfossils were present in three regions of the continental shelf, namely, offshore from the Shackleton Ice Shelf, from Cape Carr and from close to the Mertz Glacier. An earlier study showed these sediments to contain palynomorphs recycled from eroding sedimentary sequences. Available under University of Tasmania Standard License.ĭuring the 1911–1914 Australasian Antarctic Expedition samples of bottom sediment were dredged from a wide sweep of coastline extending from the main base at Commonwealth Bay, to the western edge of the Shackleton Ice Shelf.
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