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Molybdenite Re-Os Isochron Age of Yechangping Mo Deposit in Western Henan Province and Its Geological Implications
详细信息   
摘要

The Yechangping Mo deposit is a porphyry-skarn Mo deposit in the East Qinling-Dabie orogenic belt. Its ore-hosting wall rock is chert banded dolomite belonging to Longjiayuan Formation of Middle Proterozoic Guandaokou Group, its main ore types are veinlets, stockworks, disseminations and banding, and its major wall rock alterations include diopsidization, phlogopitization, talcization, chloritization, serpentinization, silicification, potassic alteration and carbonation. In this paper, the authors hold that the geodynamic setting of the Yechangping Mo deposit is widespread magmatism and back-arc extension caused by subduction of the paleo-Pacific plate beneath the Eurasian continent.

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