Abstract
The bottom of the stratigraphic sequence of the Dzhugdzhur deep-seated granulite complex was determined to consist of a stratified metabasite-enderbite association. The distributions of major and trace elements indicate that the protoliths of the association were volcanic rocks of the calc-alkaline, komatiite-tholeiite, and picrite series. The model assumed for the genesis of the protolithic volcanics of the metabasite-enderbite association includes two stages. The first of them was responsible for the decompression-induced partial melting of the material of an ascending mantle plume with the derivation of melts of the komatiite-tholeiite series. During the second stage, the volcanics of the calc-alkaline series were produced by the partial melting of the metabasite crust under the effect of the heat of the ascending mantle plume. The protoliths of the metabasite-enderbite association were formed in the Early Proterozoic.
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Original Russian Text © M.A. Mishkin, A.M. Lennikov, G.M. Vovna, Z.G. Badredinov, R.A. Oktyabr’skii, 2007, published in Geokhimiya, 2007, No. 6, pp. 608–623.
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Mishkin, M.A., Lennikov, A.M., Vovna, G.M. et al. Geochemistry and protoliths of the metabasite-enderbite association of the Dzhugdzhur block, Aldan Shield. Geochem. Int. 45, 546–560 (2007). https://doi.org/10.1134/S0016702907060031
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DOI: https://doi.org/10.1134/S0016702907060031