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FROM THE OPERATIONAL EXPERIENCE OF THE MINING COMPANIES AND THE ORGANIZATIONS
TASHKENT STATE TECHNICAL UNIVERSITY
ArticleName Geodynamic classification of large hard mineral deposits in Uzbekistan
ArticleAuthor Isakhodzhaev B. A., Mirkamalov R. Kh.
ArticleAuthorData

Tashkent State Technical University (Tashkent, Uzbekistan):

Isakhodzhaev B. A., Professor, Doctor of Geological and Mineralogical Sciences

 

SE Scientific Research Institute of Mineral Resources (Tashkent, Uzbekistan):

Mirkamalov R. Kh., Head of Department, Candidate of Geological and Mineralogical Sciences

Abstract

The authors have developed geodynamics-based classification of large geological-payable hard mineral deposits in Uzbekistan in terms of 32 solid fuel mineral occurrences of celestite, kaolin, uranium, as well as noble, nonferrous and rare metals. The classification distinguishes minerogenetic periods, from Late Proterozoic up to Neogene Quaternary period; besides it describes geo-chronological limits of formation of mineral accumulations, geodynamic situation of their formation and their localization conditions. Out of the combined list of deposits, there are 32 large gold accumulations and 2 deposits that hold unique gold reserves—Muruntau and Bolshoy Almalyk (Kalmakyr, Dalnee etc.), the latter deposit has unique copper and silver reserves, too. The great majority of large deposits in Uzbekistan formed under the influence of volcano-intrusive belts (core zone) on active continental margin, paleo-oceans (internal shelf) on passive continental margin, and continental plateaus. Highly fruitful ages of mineralization are in accord with the basic stages of subduction accretion in the early Paleozoic, back-arc rifting in the early and middle Carbon and the Permian collision of Pennsylvanian period. It is characteristic of collision granitoid belts that skarn–rare metal mineralization weakly shows itself, in the form of medium-size and small deposits, except for bigger one, Ingichkinsky ore field. Intercontinental geodynamic conditions in the Mezozoic–Cainozoic ages initiated generation of coal and kaolin, potash salts, uranium, celestite, slate coal with ample content of various commercial minerals, phosphate rock and oxidized uranium–vanadium ore.

keywords Gold, kaolin, coal, uranium, nonferrous and rare metals, large deposits, geo-chronology, geodynamic conditions, localization conditions, minerogenetic periods, ore control structure, geological exploration
References

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