Origin of two types of rhyolites in the Tarim Large Igneous Province: Consequences of incubation and melting of a mantle plume
The Early Permian Tarim Large Igneous Province (LIP) in northwestern China contains a large area of silicic volcanics (~48,000km2) which are spatially and temporally associated with mafic-ultramafic rocks. In order to understand the behavior of crust above a mantle plume, selected rhyolitic samples are investigated in terms of U-Pb zircon dating, geochemical and isotopic analyses. The Tarim rhyolites have high A/CNK ratios (=molar Al2O3/CaO+Na2O+K2O), Fe#, Ga/Al ratios, concentrations of high...[Show more]
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