![]() RUSSIAN JOURNAL OF EARTH SCIENCES VOL. 1, NO. 2, PAGES 179–222, doi:10.2205/1999ES000015, 1999
Low mantle plume component in 370 Ma old Kola ultrabasic-alkaline-carbonatite complexes: Evidences from rare gas isotopes and related trace elementsI. N. Tolstikhin, I. L. Kamensky, V. A. Nivin, V. R. Vetrin, E. G. Balaganskaya, S. V. Ikorsky, M. A. Gannibal, and Yu. M. Kirnarsky Geological Institute, Kola Scientific Centre, Russian Academy of Sciences, Apatity, Russia B. Marty Centre National de la Recherche Scientifique Centre de Recherches Petrographiques et Geochimiques(C.R.P.G.), Vandoeuvre-Nancy Cedex, France D. Weiss, A. Verhulst, and D. Demaiffe Petrologie et Geodynamique Chimique Department des Sciences de la Terre et de l`Environnement Faculte des Sciences Universite, Bruxelles, BelgiqueAbstract
[1] During Devonian pulse of
alkaline magmatism (370 Ma ago) 18 ultrabasic-alkaline-carbonatite complexes
were formed on the Kola Peninsula. Rare gas isotope abundances were studied
in ~300 samples from 8 complexes and also from Devonian dikes. A comparison
of expected from in-situ closed-system production (calc) and measured (meas)
abundances has shown that
4He
meas Received 5 December 1998; published 12 February 1999. Keywords: mantle plume, rare gas isotopes, trace elements. ![]() Citation: Tolstikhin, I. N., I. L. Kamensky, V. A. Nivin, V. R. Vetrin, E. G. Balaganskaya, S. V. Ikorsky, M. A. Gannibal, Yu. M. Kirnarsky, B. Marty, D. Weiss, A. Verhulst, and D. Demaiffe (1999), Low mantle plume component in 370 Ma old Kola ultrabasic-alkaline-carbonatite complexes: Evidences from rare gas isotopes and related trace elements, Russ. J. Earth Sci., 1, No.2, 179-222, doi:10.2205/1999ES000015. Version of this paper in Russian Copyright 1999 by the Russian Journal of Earth SciencesPowered by TeXWeb (Win32, v.2.0). |