Petrogenesis of the Middle Jurassic andesitic dikes in the giant Dexing porphyry copper ore field, South China: implications for mineralization
Journal of Asian Earth Sciences(2020)
摘要
•The Dexing andesitic dikes were formed at ca. 166 Ma.•These dikes were derived from the subduction-modified lithospheric mantle.•Cu concentration of andesitic dikes is lower than ore-related granodiorite porphyries.•Copper come from metal-rich continental crust instead of the mantle.•Mafic magma provides heat for the formation of granodiorite porphyries.
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关键词
Andesitic dikes,Porphyry copper system,Non-arc setting,Dexing,South China
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