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- W2378051650 abstract "Kupferschiefer type Cu-Ag deposits occur in the Upper Permian Xuanwei Formation in the Leshan-Muchuan region at the southwestern edge of the Sichuan basin.Evidences from geology,major element,REE and thermoluminescence analyses suggest that these Kupferschiefer type Cu-Ag deposits were formed during diagenesis and the ore-forming fluids were derived from the underlying basalt.Fluid dynamic analyses show that the ore-forming fluids migrated in a unicellular convection,fluids migrated through the basalt,leaching Cu and Ag from basalt and forming ore-bearing solusions,up the western basement highs,moved laterally along the Xuanwei Formation toward the basin centers,presumably to sink back down into the basalt,completing a convection cell which was about 15 km long,300 m high and subhorizontal.Further analysis and calculation suggests that there are good geological,tectonic and fluid-dynamic conditions to form middle-size Cu and large-size Ag Kupferschiefer type deposits,but superlarge doposits are unlikely to be formed in this region." @default.
- W2378051650 created "2016-06-24" @default.
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- W2378051650 date "1999-01-01" @default.
- W2378051650 modified "2023-09-25" @default.
- W2378051650 title "GEOLOGICAL AND GEOCHEMICAL CHARACTERISTICSAND GENESIS BY FLUID CONVECTION FOR PERMIANKUPFERSCHIEFER CU-AG TYPE DEPOSITS AT THE SOUTHWESTERN EDGE OF THE SICHUAN BASIN" @default.
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