Connection between High Tectonic Stresses and Endogenous Ring Structures
S. B. STAZHEVSKY, G. N. KHAN
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: Земная кора, месторождения полезных ископаемых. тектонические напряжения, деформированное состояние, эндогенные кольцевые структуры, метод дискретных элементов, Earth crust, mineral deposits, tectonic stresses, deformation state, endogenous ring structures, discrete element method
Abstract
At mineral deposits and in the intercontinental areas of the Earth, subhorizontal tectonic compression stresses are anomalously high. Many mineral deposits occur within subsurface ring-shaped morpho-formations. The authors solve the problem on stress state in a ring structure at representative stages of its evolution. It is shown that sublateral compression in the ring structure, in particular, at mineable depths, is very heterogeneous, unstable and can considerably exceed stresses due to overburden rock mass weight. The calculated results are compared with the laboratory and in situ data.
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