Age of granulite from Huangtuling, Dabie Mountain: Pb-Pb dating of garnet by a stepwise dissolution technique |
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| Authors: | Hanwen Zhou Xianhua Li Ying Liu Zhendong You Shutian Suo Zengqiu Zhong |
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| Affiliation: | (1) Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640 Guangzhou, China;(2) Department of Geology, China University of Geoscience (Wuhan), 430074 Wuhan, China |
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| Abstract: | A new stepwise dissolution scheme, involving acids with different properties, enables the selective recovery of radiogenic and common Pb from a mineral, and makes single-mineral Pb-Pb dating possible. Garnet from a granulite sample from Huangtuling, northern Dabie Mountain yields a Pb-Pb isochron age of (1998 ±35) Ma, which is interpreted as the timing of peak metamorphism of granulite facies. |
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| Keywords: | garnet stepwise dissolution technique Pb-Pb isochron age dating of metamorphic rocks granulite Dabie Mountain |
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