Structural characteristic of the hydrothermal-ore system of the Bambukoy river basin, Western Transbaikalia

Abstract

The hydrothermal ore system of the Bambukoy basin of the Western Transbaikalia is located within the South Muya Ridge is a set of quartz veins with different orientations, performing fissure paragenesis, formed during the development of thrust and shear deformations. The rocks enclosing are terrigenous deposits of the Amatkan Formation of the Vendian age, presented in the form of interbedded aleurolites and sandstones of varying grain size. The terrigenous deposits intensively deployed in inclined, recumbent, diving folds. In the structure of the zone, there are two types of quartz veins. The first type includes veins concordant stratification and cleavage, the second type are counter veins. Due to the kinematic reconstruction was revealed that the formation of sub - concordant veins is associated with the initial stages of the formation of the thrust system. In turn, the counter veins are derived from the subsequent stages of deformation, expressed in the development of left-side shifts that complicate the thrust system.