Инд. авторы: | Buslov M.M., Dobretsov N.L., Vovna G.M., Kiselev V.I. |
Заглавие: | Structural location, composition, and geodynamic nature of diamond-bearing metamorphic rocks of the Kokchetav subduction-collision zone of the Central Asian Fold Belt (northern Kazakhstan) |
Библ. ссылка: | Buslov M.M., Dobretsov N.L., Vovna G.M., Kiselev V.I. Structural location, composition, and geodynamic nature of diamond-bearing metamorphic rocks of the Kokchetav subduction-collision zone of the Central Asian Fold Belt (northern Kazakhstan) // Russian Geology and Geophysics. - 2015. - Vol.56. - Iss. 1-2. - P.64-80. - ISSN 1068-7971. - EISSN 1878-030X. |
Внешние системы: | DOI: 10.1016/j.rgg.2015.01.004; РИНЦ: 24019135; SCOPUS: 2-s2.0-84925310361; WoS: 000351312200004; |
Реферат: | eng: We present data on different aspects of geology, mineralogy, petrology, geochemistry, and geochronology of diamond-bearing metamorphic rocks of the Kumdy-Kol terrane, which show the similarity of their protolith to the sedimentary rocks of the Kokchetav microcontinent. The structural location of the studied objects in the accretion-collision zone evidences that the subduction of the Kokchetav microcontinent beneath the Vendian-Cambrian Ishim-Selety island arc is the main mechanism of transport of graphite-bearing terrigenous-carbonate rocks to zones of their transformation into diamond-bearing metamorphic rocks. The sedimentary rocks of the Kokchetav microcontinent, which are enriched in graphite and iron sulfides and carbonates, contain all components necessary for diamond crystallization in deep-seated subduction zone. This is in agreement with the experimental data and the compositions of fluid-melt inclusions in the minerals of diamond-bearing rocks. (C) 2015, V.S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.
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Издано: | 2015 |
Физ. характеристика: | с.64-80 |