Deep sea diapirs and bottom simulating reflector in Fairway Basin (SW Pacific)

Auzende, Jean-Marie, Van de Beuque, Sabrina, Dickens, Gerald, François, Caroline, Lavoy, Yves, Voutay, Olivier, and Exon, Neville (2000) Deep sea diapirs and bottom simulating reflector in Fairway Basin (SW Pacific). Marine Geophysical Researches, 21 (6). pp. 579-587.

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A recent swath-bathymetry and geophysical survey of the R/V L"Atalante in the Fairway Basin between Australia and New Caledonia allowed to confirm the Cretaceous age of the creation of the basin by continental stretching. This first stage of opening of the Fairway Basin is associated with the deposition of a continuous salt/mud layer feeding today numerous diapirs, some of them piercing the 3 to 4 km thick sedimentary cover and reaching the seafloor. In close link with this salt/mud layer a Bottom Simulating Reflector indicator of gas hydrates level occupies a 70thinsp000 km2 surface at about 500 to 600 m-depth beneath the sea floor. The coexistence of both BSR and diapirs suggests a thermogenic better than biogenic origin for the gas hydrates horizon.

Item ID: 12949
Item Type: Article (Research - C1)
ISSN: 1573-0581
Keywords: BSR, Fairway Basin, salt domes, Swath-Mapping, SW pacific, seismic
Date Deposited: 26 Jul 2012 03:24
FoR Codes: 04 EARTH SCIENCES > 0402 Geochemistry > 040204 Organic Geochemistry @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970104 Expanding Knowledge in the Earth Sciences @ 100%
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