A conceptual model of the copper–porphyry ore formation based on joint analysis of deep 3D geophysical models: Sorskoe complex (Russia) case studyстатьяИсследовательская статья
Статья опубликована в журнале из списка Web of Science и/или Scopus
Аннотация: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.
