A Conceptual Model of the Copper–porphyry Ore Formation Based on Joint Analysis of Deep 3D Geophysical Models: Sorskoe Complex (Russia) Case Study

Acta Geophysica

Godina, A.G.¹  Spichak, V.V.¹ 

[1] Geoelectromagnetic Research Centre IPE RAS, Moscow, Russia

关键词: conceptual model;    copper-porphyry;    geophysical markers;    lithology model;    ore transportation mechanism;    Sorskoe deposit (Russia);   

学科分类：地球科学(综合)

来源: Polska Akademia Nauk * Instytut Geofizyki

【 摘 要 】

Joint analysis of deep three-dimensional models of the electrical resistivity, seismic velocity, and density of the complex hosting the Sorskoe Cu–Mo deposit (Russia) is carried out aimed at finding geophysical markers characterizing the areas of ore generation, transportation and deposition. The three-dimensional lithology model of the study area is built based on the empirical relationship between the silica content of the rocks and seismic velocities. It is in agreement with geological and geochemical studies provided in this area earlier and could be used as a basis for forecasting locations of the copper–molybdenum ore deposits at depth. A conceptual model of the copper–porphyry complex explaining the mechanisms of ore generation, transportation from the lower to the upper crust and deposition in the upper crust is suggested. In particular, it is supposed that post-magmatic supercritical gas–water ore-bearing fluids are upwelling through the plastic crust due to the sliding of the fluid films along the cleavage planes of the foliated rocks while at the depths of the brittle upper crust this mechanism could be changed by volumetric fluid transportation along the network of large pores and cracks.

【 授权许可】

Unknown