1. JGD
  2. All Volumes and Issues
  3. 2(13), 2012
  4. New data about the deep heterogeneities of drake passage structures and the hydrocarbon potential of the Antarctic peninsula continental margin

New data about the deep heterogeneities of drake passage structures and the hydrocarbon potential of the Antarctic peninsula continental margin

JGD.
2012;
Volume 13, Number 2
: pp. 74-83
https://doi.org/10.23939/jgd2012.02.074
Received: October 10, 2012
Authors:
  1. S. P. Levashov
  2. M. A. Yakymchuk
  3. I. M. Korchahin
  4. V. H. Bakhmutov
  5. V. D. Soloviov
  6. D. M. Bozhezha
1
Institute of Applied Problems of Ecology, Geophysics and Geochemistry
2
Institute of Applied Problems of Ecology, Geophysics and Geochemistry
3
Subbotin Institute of geophysics of National Academy of Sciences of Ukraine
4
Subbotin Institute of Geophysics of NAS of Ukraine
5
Subbotin Institute of Geophysics of NAS of Ukraine
6
Center for Management and Marketing in the field of Earth Sciences IGN NAS of Ukraine; Institute of Applied Problems of Ecology, Geophysics and Geochemistry

The results of investigations obtained during the seasonal geophysical works of the 17th Ukrainian Antarctic Expedition (March 2012) are given. The marine geoelectric researches by methods of forming a short-pulsed electromagnetic field (FSPEF) and vertical electric-resonance sounding (VERS) had been conducted in this region. In the vicinity of the Ukrainian Antarctic station (UAS) “Academician Vernadsky”, in the Drake Passage and Bransfield, as well as in the western Scotia Sea made more than 85 deep-sounding VERS (to a depth of 24 300 m). The total length of tacks taken by the VERS was 2424 km. According to the results of geoelectric studies four deep profile sections and a schematic map of Moho boundary were created. The deep geoelectric boundaries and large mantle heterogeneities distribution in different segments of the Drake Passage can be interpreted as large-scale processes of formation and deep transformation of the continental crust fragments under the influence of sufficiently large diapirs of partially molten upper mantle rocks. Four “hydrocarbon deposit” type anomalies were detected on Antarctic margin in the region of UAS “Academician Vernadsky” due the special technology of satellite data processing and interpretation using. Some anomalous parameters of polarized layers were chosen by VERS sounding within these anomalies. The total area of these anomalies previously identified from satellite data is about 900 km2. These data confirm the assumption about the possible existence of the new oil and gas area in this part of the Antarctic continental margin.

Аntarctics
Drake Passage
South Shetland Trench
geoelectric methods
remote data processing
hydrocarbon deposit

1. Levashov S.P., Bahmutov V.G., Korchagin I.N., Pishhanyj Ju.M., Jakimchuk N.A. Geojelektricheskie issledovanija vo vremja provedenija sezonnyh rabot 11-j Ukrainskoj antarkticheskoj jekspedicii // Geoinformatika. - 2006. - № 2. - S. 24-33.
2. Levashov S.P., Jakimchuk N.A., Korchagin I.N. Novye vozmozhnosti operativnoj ocenki perspektiv neftegazonosnosti razvedochnyh ploshhadej, trudnodostupnyh i udalennyh territorij, licenzionnyh blokov // Geoinformatika. - 2010. - № 3. - S. 22-43.
3. Levashov S.P., Jakimchuk N.A., Korchagin I.N. Operativnoe reshenie prakticheskih zadach pripo-verhnostnoj geofiziki: ot primenenija neklassicheskih geojelektricheskih metodov do no¬voj paradigmy geofizicheskih issledovanij // Geoinformatika. - 2011. - № 1. - S. 22-31.
4. Levashov S.P., Jakimchuk N.A., Korchagin I.N. Ocenka otnositel'nyh znachenij plastovogo davlenija fljuidov v kollektorah: rezul'taty provedennyh jeksperimentov i perspektivy prakticheskogo primenenija // Geoinformatika. - 2011. - № 2. - S. 19-35.
5. Levashov S.P., Jakimchuk N.A., Korchagin I.N. Jekspress-tehnologija "prjamyh" poiskov i razvedki skoplenij uglevodorodov geojelektricheskimi metodami: rezul'taty prakticheskogo primenenija v 2001-2005 gg. // Geoinformatika. - 2006. - № 1. - S. 31-43.
6. Levashov S.P., Jakimchuk N.A., Korchagin I.N.i dr. Metodicheskie aspekty primenenija tehnologii obrabotki i interpretacii dannyh distancionnogo zondirovanija Zemli pri provedenii poiskovyh rabot na neft' i gaz v akvatorijah // Geoinformatika. - 2012. - № 1. - S. 5-16.
7. Novye idei v okeanologii. / Otv. red. M.E. Vinogradov, S.S. Lappo / In-t okeanologii im. P.P. Shirshova. - M.: Nauka. - T. 2: Geologija. - 2004. - 407 s.
8. Udincev G.B., Beresnev A.F., Kurencova i dr. Proliv Drejka i more Skosha - okeanskie vo¬rota Zapadnoj Antarktiki / Stroenie i istorija razvitija litosfery. - M.: Paulsen. - 2010. - S.66-90.
9. Udincev G.B., Shenke G.V. Ocherki geodinamiki Zapadnoj Antarktiki. - M.: GEOS, 2004. - 132 s.
10. Ashcroft W.A. Crustal structure of the South Shetland Islands and the Bransfield Strait // British Ant. Survey Scientific Reports. - 1972. - 66. - 43 p.
11. Bakhmutov V., Solovyov V., Korchagin I. et al. Dra¬ke Passage: crustal structure, tectonic evolution and new prognosis for local HC accumulations along the Antarctic Peninsula margin // Геофиз. журн. - 2010. - Т. 32, № 4. - С. 12-15.
12. Barker P.F., Dalziel W.D., Storey B.C. Tectonic de¬velopment of the Scotia Arc region // The Geology of Antarctica. - Oxford. - 1991. - P. 215-248.
13. Grad M., Guterch A., Janik T. Seismic structure of the lithosphere across the zone of subduced Drake Plate under the Antarctic Plate, West Antarctica // Geophys. J. Int. - 1993. - 115. - P. 568-600.
https://doi.org/10.1111/j.1365-246X.1993.tb01209.x
14. Levashov S.P., Yakymchuk N.A., Korchagin I.N. et al. Geophysical models of Drake Passage and Bransfield Strait crustal structure // Ukrainian An¬tarctic Journal. - 2008. - № 6. - P. 9-14.
15. Levashov S.P., Yakymchuk N.A., Korchagin I.N. et al. Drake Passage and Bransfield Strait - new geo-physical data and modelling of the crustal struc¬ture in Antarctica / A. Keystone in a Changing World. Online Proceedings of the 10th ISAES X. Edited by A.K. Cooper and C.R. Raymond / USGS Open-File Report 2007 - 1047.
16. Solovyov V.D., Bakhmutov V.G., Korchagin I.N. et al. Gas Hydrates Accumulations on the South Shetland Continental Margin: New Detection Pos¬sibilities // Journal of Geological Research. 2011. Article ID 514082. 8 pages. doi:10.1155/2011/ 514082.
https://doi.org/10.1155/2011/514082
17. Solovyov V.D., Bakhmutov V.G., Korchagin I.N., Levashov S.P. Crustal structure of Palmer Deep (West Coast of the Antarctic Peninsula) by geo¬physical data // Ukrainian Antarctic Journal. - 2009. - № 8. - P. 85-93.