DEEP-SEATED TECTONICS AND ITS RELATIONSHIP TO DYNAMIC PROCESSES CAUSED BY ORE MINING (according to xenolith study)
Yu. S. Shevchenko
Chita Division of the Institute of Mining, Siberian Branch, Russian Academy of Sciences, Chita, Russia
Keywords: Тектоника, ксенолиты, релаксационные явления, горные породы, катастрофические ситуации, горнорудные работы, Tectonics, xenoliths, relaxation phenomena, rocks, catastrophic situations, ore mining
Abstract
The paper examines a possible relationship of the occurrence of catastrophic situations (earthquakes, rock bursts, etc.) in unordinary conditions and manifestations of tectonic processes in the bowels of the Earth at the “lower crust-upper mantle” level. It is shown that such tectonics is observed in basite-ultrabasite xenoliths bearing clear features of deep-seated deformation (olivine twinning, curved crystals, drag grains of spinel, preferred orientation of optical indicatrices of minerals, etc.). The mentioned relationship is studied from the viewpoint of relaxation reaction of rock masses, rocks and their element components on mass displacements in the Earth’s depths.
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