New data on the age of metamorphic rocks from the granite-greenstone ruker terrane (the southern Prince Charles Mountains, East Antarctica)

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Abstract


Paper presents results of isotope studies of primary igneous and sedimentary rocks of Mawson and Menzies series from the southern Prince Charles Mountains, East Antarctica. Obtained data show that igneous protholith crystallization of Mawson orthogneiss occurred at 3164,2±9,2-3163,2±7,8 Ma ago. The Mawson orthogneiss were a basement for Menzies series sediment. The maximum time of sediment deposition is estimated to be in the range of 3,0-3,1 Ga. Sediment protholith involves an admixture of Paleoarchean material.


About the authors

N. L. Alexeev

A.P. Karpinsky Russian Geological Research Institute

Author for correspondence.
Email: nikola.alekseev@gmail.com

Russian Federation, 74, Sredny prospect, St. Petersburg, 199106

V. A. Maslov

All-Russian Research Institute of Geology and Mineral Resources of the World Ocean named after academician Igor Gramberg

Email: massev@gmail.com

Russian Federation, 1, Angliysky Avenue, St. Petersburg, 190121

V. D. Kaminsky

All-Russian Research Institute of Geology and Mineral Resources of the World Ocean named after academician Igor Gramberg

Email: nikola.alekseev@gmail.com

Russian Federation, 1, Angliysky Avenue, St. Petersburg, 190121

Corresponding Member of the Russian Academy of Sciences

V. S. Semenov

Institute of Precambrian Geology and Geochronology of the Russian Academy of Sciences

Email: nikola.alekseev@gmail.com

Russian Federation, 2, Makarova embankment, St.Petersburg, 199034

E. S. Bogomolov

Institute of Precambrian Geology and Geochronology of the Russian Academy of Sciences

Email: nikola.alekseev@gmail.com

Russian Federation, 2, Makarova embankment, St.Petersburg, 199034

I. N. Kapitonov

A.P. Karpinsky Russian Geological Research Institute

Email: nikola.alekseev@gmail.com

Russian Federation, 74, Sredny prospect, St. Petersburg, 199106

N. A. Gonzhurov

Stock Venture "Polar marine geosurvey expedition"

Email: nikola.alekseev@gmail.com

Russian Federation, 24, Pobedy str., St.-Petersburg, Lomonosov, 198412

A. Yu. Melnik

Stock Venture "Polar marine geosurvey expedition"

Email: nikola.alekseev@gmail.com

Russian Federation, 24, Pobedy str., St.-Petersburg, Lomonosov, 198412

M. S. Yegorov

Stock Venture "Polar marine geosurvey expedition"

Email: nikola.alekseev@gmail.com

Russian Federation, 24, Pobedy str., St.-Petersburg, Lomonosov, 198412

References

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  2. Ludvig K. R. // Berkeley Geochronol Center Spec. Publ. 2003. V. 4. P. 54.
  3. Mikhalsky E. V., Henjes-Kunst F., Belyatsky B. V., Roland N. W., Sergeev S. A. New Sm-Nd, Rb-Sr, U-Pb and Hf Isotope Systematics for the Southern Prince Charles Mountains (East Antarctica) and Its Tectonic Implications // Precambr. Res. 2010. V. 182. Р. 101-123.
  4. Phillips G., Wilson C. J.L, Campbell I. H., Allen C. M. U-Th-Pb Detrital Zircon Geochronology From the Southern Prince Charles Mountains, East Antarctica - Defining the Archaean to Neoproterozoic Ruker Pro-vince // Precambr. Res. 2006. V. 148. P. 292-306.

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