J. Wannesson, 1990. "Geology and Petroleum Potential of the Adelie Coast Margin, East Antarctica", Antarctica as an Exploration Frontier—Hydrocarbon Potential, Geology, and Hazards, Bill St. John
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On the Adelie Coast continental margin, a multichannel seismic survey has revealed the presence of a thick sedimentary basin, beneath the outer continental shelf and upper slope, that may exceed 6000 m. This basin results from the creation and evolution of a continental margin, initiated about 100 million years ago from the separation of Australia and Antarctica. Beneath the outer shelf, which is 400-500 m deep, the sedimentary series consists of four units separated by three major unconformities:
-A prerift unit including a Precambrian basement, possible Paleozoic and early Mesozoic sediments and a Mesozoic synrift sequence;
-An early postrift unit, ranging in age from Cenomanian to Eocene, assumed to consist mainly of fluviatile to deltaic clastics;
-An Upper Eocene to Oligocene unit in a shallow marine environment;
-A Neogene glacial prograding unit.
The early postrift unit is considered to be a promising petroleum target based on comparison to other passive margins.
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Antarctica as an Exploration Frontier—Hydrocarbon Potential, Geology, and Hazards
The 10 papers contained in this publication are oriented toward the hydrocarbon potential of Antarctica. Contents include regional seismic surveys involving tectonic and stratigraphic interpretations extending from the Adelie Coast margin, over the Ross Sea and Bellingshausen Sea, throughthe Bransfield Straight and along the northern Antarctic Peninsula. Mesozoic sedimentary basins are compared in detail, and a tectonic synthesis of Antarctica and the surrounding southern seas is presented.