Thursday, 30 August 2007 - 4:40 PM
4.P2.C-4
“Interaction of Antarctica with other regions at different spatial scales and deep layers”
Rudolf Greku, Geology and Geoecology of Antarctica, Institute of Geological Sciences, National Academy of Sciences of Ukraine, 55b Gonchara St., Kiev, 01601, Ukraine and Dmitry R. Greku, Satellite and MarineTtechnology Laboratory, Satmar-Australia, Great Western Pages Pty Ltd,, Suite 206, 10 Norwest Central, Century Circuit, Baulkham Hills 2153 NSW, Australia, 3 Flintlock Drive, St. Clair, Sydney NSW 2759, 2759, Australia.
Structure, intraplate and interplate processes of the Antarctic region are interpreted down to a depth of 5300 km using a gravimetric tomography technique. The lateral and radial variability of four global-scale dense structures is displayed at depths of 5300 km and 2800 km and the relationship of these structures to Antarctica is outlined. It is then shown that the technique can be applied at more regional scales by providing interpretations of the gravity tomography in the areas of the Ross Sea / Scotia Plate and the Antarctic Peninsula at depth scales of a few kilometres down to>2000 km. Beneath the Scotia Plate, the thick transition layer above the ‘Ross plume’ is interpreted between depths of 620–1400 km. In the case of the Antarctic Peninsula, tomographic models display links between the Bransfield Basin and the Weddell Sea structures of the Powel basin and ‘West Weddell Trench’.
See more of Evolution of antarctic lithosphere ORAL
See more of General Submissions
See more of The 10th International Symposium on Antarctic Earth Sciences (Aug. 26 to Sept 1, 2007)
See more of General Submissions
See more of The 10th International Symposium on Antarctic Earth Sciences (Aug. 26 to Sept 1, 2007)