Ukrainian Antarctic journal

No 15 (2016): Ukrainian Antarctic Journal

Basalt-rhyolitic series of Galindez and Uruguay Islands (Antarctic Peninsula, Western Antarctica) as an object for geochemical modeling

A. G. Aleksieienko
Taras Shevchenko National University of Kyiv Institute of Geology, Kyiv, Ukraine
S. E. Shnyukov
Taras Shevchenko National University of Kyiv Institute of Geology, Kyiv, Ukraine
I. I. Lazareva
Taras Shevchenko National University of Kyiv Institute of Geology, Kyiv, Ukraine
L. I. Gavryliv
Taras Shevchenko National University of Kyiv Institute of Geology, Kyiv, Ukraine
Published January 18, 2017


This paper presents preliminary results of all stages of geochemical modeling of the evolution of the Galindez and Uruguay Islands (Antarctic Peninsula, West Antarctica) eruptive magmatism, characterizes the difficulties encountered and ways to overcome them. On the basis of the developed model the article attempts to assess the temperature, pressure and fluid modes of magmatic system during its evolution, as well as its ore-generating ability. The following was discovered: close conformity of the current magmatic system evolution to the accepted fractional crystallization model; temperature mode (-1130 ... ~ 880 °С) and depth (9-12 km, lithostatic pressure 3-4 kbar) of magmatic chamber functioning; water content in initial and residual melts during all system evolution phases; mass fraction of liquid phase in system at the moment of fluid segregation (f = 0,27) and its temperature (T = ~880 °С). However, the results should only be considered preliminary. The development of more accurate models requires a significant improvement of the initial geochemical data quality.


  1. Bakhmutov, V. G., Gladkochub, D. P., Shpira, V. V. (2013). Age-related position, geodynamic specifics and paleomagnetism of intrusive complexes of the western coast of the Antarctic Peninsula. Geophysical journal, 3 (35), 3-30. (in Russian).
  2. Gladkochub, D. P., Donskaya, T. V., Bakhmutov, V. G. (2011-2012). Peculiarities of formation, age and a model of genesis of gabbroids of the Antarctic Peninsula (Cape Tuxen, West Antarctica). Ukrainian Antarctic Journal, 10-11, 39-47. (In Russian.)
  3. Lazareva, I., Shnyukov, S., Savenok, S., Morozenko, V., Tegkaev, E., Alekseenko, A., Gavryliv L. (2015). Interpretive component of geological depositories: examples of solving some of some fundamental and applied tasks. Natural History Museum and their role in Education and Science (27-30 October, 2015, Kyiv), Pt. 1, 72-74. (in Russian)
  4. Perchuk, L. L. (1985). Sistema schelochnoi bazalt - voda. II. Poverkhnost’ likvidusa v intervale davleniy 1 atm - 20 kbar [The alkali basalt - water system. II. Liquidus surface in the 1 atm - 20 kbar pressure range]. Ocherki fiziko-khimicheskoi petrologii, XII, 66-80. (in Russian)
  5. Shniukov, S. E. (2002). Geochemical properties of a model of the evolution of magmatic systems and the Earth’s crust: a potential source of petrophysical and oregenetic information. Geophysical journal, 6, 201-229. (in Russian)
  6. Shnukov, S., Lazareva, I., Khlon, O., Mitrokhin, O., Gasanov, Yu., Morozenko, V. (2011). Geochemical simulation of magmatic system of volcanic island Deception (Western Antarctica): principles and tasks. Visnyk of Taras Shevchenko National University of Kyiv. Geology, 52, 29-33. (in Ukrainian)
  7. Shnyukov, S., Lazareva, I., Khlon, E., Marchenkov, D. (2012). Estimation of the potential of metal-bearing magmatic-hydrothermal systems by the way of their geochemical modeling. Geochemistry and ore formation, 31-32, 105-112. (in Ukrainian)
  8. Shnyukov, S. E., Lazareva, I. I., Khlon, E. A., Mitrokhin, A. V., Morozenko, V. P., Marchenkov, D. F., Nikanorova, Yu. E., Osipenko, V. Yu. (2013). A model for forming volcanic and marine volcanogenic sedimentary rocks of the Deception Island (Western Antarctica): Initial data for modelling. Geology and Mineral Resources of World Ocean, 1, 44-66. (in Russian)
  9. Harrison, T. M., Watson, E. B. (1984). The behavior of apatite during crustal anatexis: equilibrium and kinetic considerations. Geochim. et Cosmochim. Acta, 48(7), 1467-1477.
  10. Holtz, F., Johannes, W., Tamic, N., Behrens, H. (2001). Maximum and minimum water content of granitic melts generated in the crust: a reevaluation and implications. Lithos, 56, 1-14.
  11. Lazareva, I., Shnyukov, S., Khlon, E., Mitrokhin, A. (2008). Integrated geochemical modeling of magmatic systems as applied to circum Antarctic zircon census (cazic) project (IPY 2007/2008). International Antarctic Conference “Ukraine in Antarctica - National Priorities and Global Integration” (IAC2008 May 23-25, 2008, Ukraine), abstracts, 84.
  12. Montel, J. M. (1993). A model for monazite/melt equilibrium and application to the generation of granitic magmas. Chemical Geology, 110, 127-145.
  13. Rollinson H. (1993). Using geochemical data: evaluation, presentation, interpretation. Longman Group UK Limited, London.