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Aeromagnetic Constraints on Transantarctic Mountains Rift Flank Structure, Southern Victoria Land

Aeromagnetic Constraints on Transantarctic Mountains Rift Flank Structure, Southern Victoria Land. B. Csatho 1 , T. Wilson 1 , J. Kiss 2 , D. Damaske 3 , C. Finn 4 , Y. Felus 1 1 Byrd Polar Res. Ctr., Ohio State University,

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Aeromagnetic Constraints on Transantarctic Mountains Rift Flank Structure, Southern Victoria Land

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  1. Aeromagnetic Constraints on Transantarctic Mountains Rift Flank Structure, Southern Victoria Land B. Csatho1, T. Wilson1, J. Kiss2, D. Damaske3, C. Finn4, Y. Felus1 1Byrd Polar Res. Ctr., Ohio State University, Columbus, OH, 43210 USA2Eötvös Loránd Geophysical Institute of Hungary, Budapest, 1145 Hungary3Federal Institute for Geosciences and Natural Resources, Hannover, 51, Germany4U.S. Geological Survey, MS964, Denver, CO 80225 USAFax: 1-614-292-4697; e-mail: csatho.1@osu.edu

  2. Overview • TAMARA, a collaborative US-German research program • Geology of Southern Victoria Land • Interpretation of geophysical and remote sensing data for • Lineament mapping • Mapping dolerite bodies • Studying the structure of Radian lineament

  3. Conclusions • A combination of satellite imagery and geophysical data is used to map structures on ice covered areas • Aeromagnetic results suggest a feeder like body in NW corner of TAMARA area • Magnetic anomalies around Skelton Neve can be explained by dolerite sills with dike-roots. • The Radian lineament extends toward NW under the ice sheet. Radio-echo sounding detected bedrock undulations around the Portal. The size and frequency of the ‘bumps’ is similar to the surface expression of dolerite dikes

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