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Relationship between platinum-bearing ultramafic-mafic intrusions and large igneous provinces (exemplified by the Siberian Craton)
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- Mekhonoshin, A. S. (author)
- Irkutsk State Technical University,Siberian Branch of the Russian Academy of Sciences
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- Ernst, R. (author)
- Tomsk State University,Carleton University
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- Soderlund, U. (author)
- Lund University,Lunds universitet,Berggrundsgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Lithosphere and Biosphere Science,Department of Geology,Faculty of Science
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- Hamilton, Michael A. (author)
- University of Toronto
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- Kolotilina, T. B. (author)
- Siberian Branch of the Russian Academy of Sciences,Irkutsk State Technical University
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- Izokh, A. E. (author)
- Novosibirsk State University,V.S. Sobolev Institute of Geology and Mineralogy
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- Polyakov, G. V. (author)
- V.S. Sobolev Institute of Geology and Mineralogy
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- Tolstykh, N. D. (author)
- V.S. Sobolev Institute of Geology and Mineralogy
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(creator_code:org_t)
- GeoScienceWorld, 2016
- 2016
- English 12 s.
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In: Russian Geology and Geophysics. - : GeoScienceWorld. - 1068-7971. ; 57:5, s. 822-833
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
Subject headings
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- This study aims at summarizing available geological and geochemical data on known Proterozoic platinum-bearing ultramafic-mafic massifs in the south of Siberia. Considering new data on geochemistry and geochronology of some intrusions, it was feasible to compare ore-bearing complexes of different time spans and areas and to follow their relationships with the recognized large igneous provinces. In the south of Siberia, the platinum-bearing massifs might be united into three age groups: Late Paleoproterozoic (e.g., Chiney complex, Malozadoisky massif), Late Mesoproterozoic (e.g., Srednecheremshansky massif), and Neoproterozoic (e.g., Kingash complex, Yoko-Dovyren massif, and massifs in the center of the East Sayan Mts.). In most massifs but Chiney the initial magmas are magnesium-rich. On paleogeodynamic reconstructions, the position of the studied massifs is the evidence that three most precisely dated events in North Canada continued into southern Siberia: In the period 1880-1865 Ma, it was the Ghost-Mara River-Morel LIP; at 1270-1260 Ma, the Mackenzie LIP; and at 725-720 Ma, Franklin LIP. In Siberia, the mostly productive massifs with respect to PGE-Ni-Cu mineralization are those linked with the Franklin LIP: Verkhny Kingash, Yoko-Dovyren, and central part of the Eastern Sayan Mountains, e.g., Tartay, Zhelos, and Tokty-Oy.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
Keyword
- Large igneous provinces
- Mafic-ultramafic intrusions
- PGE-Ni-Cu deposits
Publication and Content Type
- art (subject category)
- ref (subject category)
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