Analysis and effectiveness of applied geological and geophysical methods for subsoil investigations of the Enderby Land in the area of the Belarusian Antarctic station

Analysis and results of geological and geophysical studies in the Enderby Land, Vechernegorskaya area of Belorussian Antarctic station, are presented. Methodology and means are described briefly, used in geological research.

The maps of the distribution of geomagnetic fields of exposed areas based on tectonophysical characteristics, geo- magnetic monitoring of daily variations and research of a stable site for the projecting of a non-magnetic pavilion were built. The anomalies of active gamma field and of five radionuclides, which are connected to composition of bedrocks that is proven by spectrometric survey, were determined. The gravity studies established changes in gravity field with correction to altitude and to an intermediate layer of other rock density, which makes it harder to gravity researches by foot.

According to the map of residual magnetism, which is constructed on kappametric survey, the confinement of magnetization with the mineral composition of the rocks was established. Realization of schlich sampling is complicated due to glacial formations.

Mineral composition of rocks, according to the results of schlich sampling, analysis of thin section and laboratory analysis, demonstrates significant prospective mineral element of rocks. Data obtained by tested methods that can be used for further subsoil exploration. The continuation of works is planned like this: geomagnetic survey, recording of variations of geomagnetic fields, unmanned aerial vehicles survey, radiometric and gamma spectrometric survey and laboratory researches of rocks.

1. Myasnikov O. V. Geologiya i petrografiya uchastka gora Vechernyaya (holmy Tala) [Geology and Petrography of the Mount Vechernyaya Area (Tala Hills). Nauchnye rezul′taty rossijskih geologo-geofizicheskih issledovanij v Antarktike [Scientific results of Russian geological and geophysical research in Antarctica], Sankt-Peterburg, 2011, iss. 3, pp. 37–59. (in Russian)

2. Shablyko P. V., Hibiev A. K., Sushkevich S. L. Geofizicheskie issledovaniya v rajone Gory Vechernyaya, Vostochnaya Antarktida, Zemlya Enderbi [Geophysical research in the Mount Vechernyaya Area, East Antarctica, Enderby Land]. Prirodnaya sreda Antarktiki: ekologicheskie problemy i ohrana: Materialy III Mezhdunarodnoj nauchno-prakticheskoj konferencii. Uchebnyj centr “Forum”, Belarus′, 17–19 sentyabrya 2018 [Antarctic environment: Environmental problems and conservation: Proceedings of the III International scientific and practical conference. Training Center “Forum”, Belarus, September 17–19, 2018]. Minsk, 2018, pp.350–353. (in Russian)

3. Karataev G. I., Golobokov S. V., Shablyko P. V., Hibiev A. K. Anomal′noe magnitnoe pole v zone Belorusskoj antarkticheskoj stancii [Anomalous magnetic field in the zone of the Belarusian Antarctic station]. Litasfera = Lithosphere, 2018, no. 2 (49), pp. 137–144. (in Russian)

4. Karataev G. I., Golobokov S. V. Metodika postroeniya fiziko-geologicheskogo razreza po kompleksu geofizicheskih polej [Methodology for constructing a physical-geological section based on a complex of geophysical fields]. Litasfera = Lithosphere, 2003, no. 2 (19), pp. 74–84. (in Russian)

5. Novikov G. F. Radiometricheskaya razvedka: uchebnik dlya vuzov [Radiometric exploration: A textbook for universities]. Leningrad, Nedra Publ., 1989, 418 p. (in Russian)

6. Bakulina L. P. Shlihovoe oprobovanie i analiz shlihovyh prob [Heavy mineral sampling and analysis of heavy mineral concentrates]. Uhta, UGTU Publ., 2014, 126 p. (in Russian)

7. Gareckij R. G., Karataev G. I., Dankevich I. V., Myasnikov O. V. Tektonicheskoe rajonirovanie fundamenta Zemli Enderbi (Vostochnaya Antarktida) [Tectonic zoning of the Enderby Land basement (East Antarctica)]. Sovremennoe sostoyanie nauk o Zemle. Materialy Mezhdunarodnoj konferencii, posvyashchennoj pamyati V. E. Haina [Current state of the Earth sciences. Proceedings of the International conference, dedicated to the memory of V. E. Khain]. Moscow, MGU Publ., 2011, pp. 824–829. (in Russian)

8. Gareckij R. G., Karataev G. I. Glubinnoe stroenie i tektonika Zemli Enderbi (Vostochnaya Antarktida [Deep Structure and Tectonics of Enderby Land (East Antarctica)]. ). Monitoring sostoyaniya prirodnoj sredy Antarktiki i obespechenie deyatel′nosti nacional′nyh ekspedicij. Materialy 1-j Mezhdunarodnoj nauchno-prakticheskoj konferencii, k. p. Naroch′. Belarus′, 26–29 maya 2014 g. [Monitoring the state of the Antarctic natural environment and supporting national expedition activities. Proceedings of the 1st International scientific and practical conference, Naroch, Belarus, May 26–29, 2014]. Minsk, Ekoperspektiva Publ., 2014, pp. 41–46. (in Russian)