Abstract
Corundum-bearing rocks are described for the first time in the Kandalaksha structure of the Lapland granulite belt. Corundum is confined to rocks of two types: metagabbro‒anorthosites constituting lenses among metaanarthosites of the Kandalaksha massif and basic granulites. Corundum crystals (up to 200 μm long) occur in plagioclase and garnet and differ from each other depending on the host mineral, which serves as evidence against their xenogenic nature. Some corundum crystals exhibit an axial zone, which may indicate their crystallization from the gaseous phase. Corundum-bearing rocks are accompanied by piclogites (pyroxene‒garnet varieties with olivine). Piclogites and their minerals (clinopyroxene, garnet) are characterized by a positive Eu anomaly, which implies rock reworking by fluids during corundum formation, when deep-seated complexes were subjected to exhumation.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
E. N. Terekhov, Geochem. Int. 45 (4), 364–380 (2007).
N. S. Serebryakov and V. L. Rusinov, Dokl. Earth Sci. A 395 (3), 389–393 (2004).
Yu. P. Men’shikov, Dokl. Akad. Nauk SSSR 243 (5), 1247–1249 (1978).
J. Kornprobst, M. Piboule, M. Rodeu, and A. Tabit, J. Petrol. 31 (3), 717–745 (1990).
V. I. Fonarev, Dokl. Earth Sci. 395 (3), 364–368 (2004).
T. V. Kaulina and M. N. Bogdanova, Litosfera, No. 12, 85–97 (2000).
E. N. Terekhov, Litosfera, No. 6, 15–39 (2007).
V. I. Fonarev, E. N. Terekhov, and A. N. Konilov, in Proc. 2nd Rus. Conf. on Precambrian Geology and Geodynamics “Granulite Complexes in Geological Evolution of Precambrian and Phanerozoic” (St. Petersburg, 2007), pp. 369–373.
S. G. Skublov and E. N. Terekhov, Dokl. Earth Sci. 425 (3), 409–414 (2009).
G. V. Berezhkova, Filamentary Crystals (Nauka, Moscow, 1969).
R. W. Hughes, Ruby and Sapphire (RWN Publ., Boulder, Colorado, 1997).
Chu Li, L. Teilor, G. Snaider, et al., Geol. Geofiz. 38 (1), 233–244 (1997).
T. Morishita, S. Arai, Y. Ishida, et al., Geochem. J. 43, 191–206 (2009).
E. N. Terekhov and A. P. Akimov, Litosfera, No. 5, 141–159 (2013).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © E.N. Terekhov, T.F. Shcherbakova, A.N. Konilov, 2016, published in Doklady Akademii Nauk, 2016, Vol. 470, No. 3, pp. 319–325.
Presented by Academician Yu.G. Leonov May 25, 2014
Rights and permissions
About this article
Cite this article
Terekhov, E.N., Shcherbakova, T.F. & Konilov, A.N. Finding of corundum-bearing rocks in the Lapland granulite belt. Dokl. Earth Sc. 470, 914–920 (2016). https://doi.org/10.1134/S1028334X16090208
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1028334X16090208