Ukrainian Antarctic journal

No 8 (2009): Ukrainian Antarctic Journal
Articles

Crustal Structure of Palmer Deep (West Coast of The Antarctic Peninsula) by Geophysical Data

V. D. Solovyov
Institute of Geophysics of National Academy of Sciences of Ukraine, Kyiv
V. G. Bakhmutov
Institute of Geophysics of National Academy of Science of Ukraine, Kyiv
I. N. Korchagin
Institute of Geophysics of National Academy of Science of Ukraine, Kyiv
S. P. Levashov
Institute of the applied problems of Ecology, Geophysics and Geochemistry, Kyiv
Published December 31, 2009
Keywords
  • West Antarctica,
  • crustal structure,
  • geophysical data

Abstract

The Ukrainian Antarctic expeditions acquired new geoelectrical data ('short-impulse electromagnetic field formation' – FSPEF, and 'vertical electric-resonance sounding' – VERS) along profiles across Drake Passage and continental shelf of Antarctic Peninsula. The electromagnetic experiments yielded new data set with unique information about the inner structure and new values of the depth of the Moho discontinuity of West Antarctica region. Deep crustal heterogeneities of the Palmer Deep Basin that were obtained from the VERS- profiles data could be connected with processes of tectonic transformations of the Antarctic Peninsula shelf structures. Possibly, the conformities of continental shelf glacial streams may be explained exactly by a tectonic factor of recent geological past. New information about sediment distribution and inner crustal structure has an important value for searching and prospecting the hydrocarbon deposits of Palmer Deep region