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Russian Journal of Pacific Geology

, Volume 7, Issue 6, pp 416–426 | Cite as

Metallogenic analysis of the type gold-bearing districts in the southern and eastern framing of the North Asian Craton: Geotectonic position, geological structure, and specifics of formation

  • V. G. KhomichEmail author
  • I. I. Fatyanov
  • N. G. Boriskina
Article

Abstract

Large ore-placer districts in the southern and eastern framing of the North Asian Craton (Bodaibo, Upper Selemdzha, South Verkhoyansk, and Ten’ka) are characterized by some common features such as the confinement to the areas of the decreased crustal thickness and gravity gradient zones traced by deep-seated faults; the fold-thrust structure of the terrigenous-black-shale sequences; the phyllitic, greenschist, and sometimes epidote-amphibolite metamorphism of the ore-bearing rocks; and the complex and long history of the Au accumulation, which involved the subsequent stepwise change from the ore-preparatory to the ore-generating stages. The latter stage is spatially and temporally related with manifestations of orogenic (volcanoplutonic) magmatism, which produced mineralization of the gold-quartz, gold-sulfidequartz, gold-black shale, gold-rare metal, and gold-silver formations. The peculiarities of their spatial relations (juxtaposition-superposition or lateral zoning) determine the scales of the noble metal concentration, the economic significance of the deposits, and the metallogenic potential of the regions. The revealed similarity in the evolution and structure of the compared districts should be taken into account in choosing new promising areas and estimating the potential gold-bearing territories in the framing of the North-Asian and other cratons.

Keywords

gold-bearing ore-placer districts metallogenic potential black-shale formation East Russia 

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Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  • V. G. Khomich
    • 1
    Email author
  • I. I. Fatyanov
    • 1
  • N. G. Boriskina
    • 1
  1. 1.Far East Geological Institute, Far East BranchRussian Academy of SciencesVladivostokRussia

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