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Structural–Hydrodynamic Organization and Functioning of the Ore-Forming System of the Irokinda Au Deposit (Northeast Transbaikalia)

  • GEOLOGY OF ORE DEPOSITS
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Abstract

New data on the structural–hydrodynamic organization of the ore-forming system (OFS) of the Irokinda deposit in the architecture of deep-seated faults are presented. The specific features of OFS functioning in a “centroid” seismic stress field under abnormal pressure exceeding the lithostatic one are revealed. The area of OFS feeding from autonomous polygenetic sources, which formed polychronously in tectonomagmatic pull-apart structures, is outlined for the first time. A 3D model of polygenetic source formation in one of the structures was created. A model of OFS functioning during the post-collisional period is discussed. According to this model, centroid-type paleoearthquakes with hypocenters in the Benioff zone periodically opened reservoirs with metamorphogenic gases, accumulated in an accretionary prism, and provided their transfer into pull-apart structures, mixing with magmatogenic fluids and migration of mixed gas hydrates into the mineralization zone.

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Funding

This work was supported by the Ministry of Science and Higher Education of the Russian Federation, project no. 13.1902.21.0018.

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Authors and Affiliations

  1. Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, 119017, Moscow, Russia

    K. Yu. Murashov, T. M. Zlobina,  V. A. Petrov & A. A. Kotov

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  1. K. Yu. Murashov
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  2. T. M. Zlobina
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  3. V. A. Petrov
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  4. A. A. Kotov
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Corresponding author

Correspondence to K. Yu. Murashov.

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The authors declare that they have no conflicts of interest.

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Translated by D. Voroshchuk

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Murashov, K.Y., Zlobina, T.M., Petrov, V.A. et al. Structural–Hydrodynamic Organization and Functioning of the Ore-Forming System of the Irokinda Au Deposit (Northeast Transbaikalia). Dokl. Earth Sc. 506, 625–629 (2022). https://doi.org/10.1134/S1028334X22600256

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  • DOI: https://doi.org/10.1134/S1028334X22600256

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