U-Pb geochronology and geochemistry of the Dashibao Basalts in the Songpan-Ganzi Terrane, SW China, with implications for the age of Emeishan volcanism

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U-Pb geochronology and geochemistry of the Dashibao Basalts in the Songpan-Ganzi Terrane, SW China, with implications for the age of Emeishan volcanism

Permian marine basalts (the Dashibao Formation) in the Songpan-Ganzi Terrane to the west of the Yangtze Block, SW China, yield a SHRIMP zircon U-Pb weighted mean age of 263 ± 2 Ma. The Dashibao basalts are characterized by high TiO2 contents (1.73-4.65 wt. %) and Ti/Y ratios with a mean of 577, and...

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Bibliographic Details
Main Authors:	Zi, Jianwei, Fan, W., Wang, Y., Cawood, P., Peng, T., Sun, L., Xu, Z.
Format:	Journal Article
Published:	American Journal of Science 2010
Online Access:	http://hdl.handle.net/20.500.11937/12486

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