Natural and technogenic changes in the mode of rock deformation in the uranium deposit in granites |
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Authors: | V A Petrov V V Poluektov R M Nasimov S I Shchukin J Hammer |
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Institution: | 1.Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry (IGEM),Russian Academy of Sciences,Moscow,Russia;2.Schmidt Institute of Physics of the Earth,Russian Academy of Sciences,Moscow,Russia;3.Open Joint-Stock Company PPGKhO,Krasnokamensk, Transbaikal Region,Russia;4.Federal Agency of Geosciences and Natural Resources (BGR),Hannover,Germany |
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Abstract: | The Antey deposit in the southeastern Transbaikal region is one of the main objects of uranium ore mining. It is localized
in the Late Paleozoic granite basement of the Strel’tsovo Caldera formed during the Late Mesozoic tectono-magmatic activation
of geological structures in the region. Vein ore bodies of the deposit are controlled by steep near-meridional faults being
developed in zones of intense hydrothermal-metasomatic alterations, cataclasis, brecciation, and elevated rock fracturing.
The upper parts of the ore bodies are located at a depth of 400 m and their lower parts are traceable up to depths of 1300
m below the surface. The mining activity involves progressively deeper levels of the section, which determines the necessity
for the complex assessment of the deposit potential. The mode of rock deformation at the four lower horizons of mines occurring
at depths of 500 to 700 m is discussed. It is shown that variations in the mode of deformation are determined by a combination
of natural and technogenic factors, which should be taken into consideration in predicting the geomechanic behavior of the
rocks for safe mining works. |
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