Neoproterozoic Alkaline Igneous Rocks, Carbonatites and Gold Deposits of the Yenisei Ridge, Central Siberia: Evidence of Mantle Plume Activity and Late Collision Shear Tectonics Associated with Orogenic Gold Mineralization

Описание

Тип публикации: статья из журнала

Год издания: 2011

Идентификатор DOI: 10.1111/j.1751-3928.2011.00170.x

Ключевые слова: alkaline magmatism, mantle plume, shear tectonics, Au deposits, isotope geochemistry, Yenisei Ridge, Alkaline magmatism, Au deposits, Isotope geochemistry, Mantle plume, Shear tectonics, Yenisei Ridge

Аннотация: This paper discusses the plausible genetic relationship between disseminated Au-sulfide mineralization and mantle plume-related magmatism in the context of the tectonic evolution of the Yenisei ridge in central Siberia. The relationship is inferred based on structural and geochemical studies of the Blagodat Au deposit, and the TranПоказать полностьюsangara alkaline syenite and Penchenga fenite-carbonatite complexes. Analyses of Nd, Sr and Ar isotopic compositions of samples from these geological features show their possible close temporal relationships but different sources. Nevertheless, the present data sets suggest that thermal effects of mantle plume activity likely controlled hydrothermal fluid mobilization in metamorphic suites and further enrichment of gold. The structural setting of the Blagodat Au deposit demonstrates the typical example of Au-sulfide mineralization controlled by late collisional shear deformations. The present example of Au deposit associated temporally and spatially with carbonatites and alkaline rock complexes is an exclusive case in the Earth's history supporting a plausible genetic relationship between mantle plume-related magmatism and orogenic-Au mineralization.

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Издание

Журнал: RESOURCE GEOLOGY

Выпуск журнала: Vol. 61, Is. 4

Номера страниц: 316-343

ISSN журнала: 13441698

Место издания: HOBOKEN

Издатель: WILEY-BLACKWELL

Авторы

  • Gertner Igor (Tomsk State Univ, Fac Geol & Geog, Tomsk 634050, Russia)
  • Tishin Platon (Tomsk State Univ, Fac Geol & Geog, Tomsk 634050, Russia)
  • Vrublevskii Vassily (Tomsk State Univ, Fac Geol & Geog, Tomsk 634050, Russia)
  • Sazonov Anatoly (Siberian Fed Univ, Inst Geol & Geotechnol, Krasnoyarsk, Russia)
  • Zvyagina Elena (Siberian Fed Univ, Inst Geol & Geotechnol, Krasnoyarsk, Russia)
  • Kolmakov Yuriy (Tomsk State Univ, Fac Geol & Geog, Tomsk 634050, Russia)

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