Abstract
Mesozoic ore systems were responsible for the formation of numerous Au, Ag, Mo, and Pb occurrences and deposits in the North-Stanovaya metallogenic zone, the largest of which are the Bamskoe, Vykhodnoe, Mogotinskoe, Dess, Nakhodka, and Apsakan deposits. The age of the hydrothermal-metasomatic processes that accompanied the mineralization is 130–122 Ma, which allows us to relate the ore formation to the origin of the granitoids of the Tynda-Bakaran complex (138–124 Ma). The latter rocks form large intrusions united into the Stanovoi Belt in the southeastern framing of the North-Asian Craton. The ore objects change in the sequence Au-Ag-Au-Mo(Au) from the south northward and are restricted to the contact zones of intrusions of the Stanovoi Belt, which were probably formed at the transform continental margin.
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Original Russian Text © I.V. Buchko, A.A. Sorokin, V.A. Ponomarchuk, A.V. Travin, Ir.V. Buchko, 2012, published in Tikhookeanskaya Geologiya, 2012, Vol. 31, No. 2, pp. 69–74.
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Buchko, I.V., Sorokin, A.A., Ponomarchuk, V.A. et al. Age of the Au-Ag mineralization and its relation to the magmatism at the Dess occurrence, North Stanovaya metallogenic zone (southeastern framing of the North-Asian Craton). Russ. J. of Pac. Geol. 6, 158–163 (2012). https://doi.org/10.1134/S1819714012020029
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DOI: https://doi.org/10.1134/S1819714012020029