Fluid systems of the Mamsko-Bodaibin mineragenic zone in north Transbaikal

Abstract

The article presents the results of the study of fluid systems in the Earth’s crust within the Mamsko-Bodaibin mineragenic zone of the northern Transbaikal using magnetic field anomalies, gravity and seismic data. Two-dimensional models of the density and magnetization of schistosity zones and deep sections of gold deposits allowed us to identify the location of fluid systems and possible paths of magmatic thermofluid flows in ancient rocks. The authors have revealed peculiarities of fluid systems at different depth levels and the role of vertical ore-controlling formations of the earth crust of the Mamsko-Bodaibin zone. Diagnostic features are proposed to control the paths of fluid transport to the surface and the location of the ore-generating structures, taking into account the fluid-magmatic activity of the earth’s crust and mantle. The analysis showed that the Mamsko-Bodaibin zone is prospective in the search for new ore objects. Based on the results of the study, we propose a refined model of the ore localization of the Sukholozhskoye ore field, which includes the influence of deep factors.

Keywords

• fluid systems
• magnetic anomalies
• gold deposits