Zircon U-Pb Dating and Hf-isotope Compositions of Granodiorite From the Guoganjianian Mountain Area, Central Qiangtang, Northern Tibet, China

HU Pei-yuan; LI Cai; JIE Chao-ming; WANG Ming; LI Jiao; ZHONG Lin-xi

Northwestern Geology > 2014 > 47(1): 52-60.

HU Pei-yuan, LI Cai, JIE Chao-ming, et al. Zircon U-Pb Dating and Hf-isotope Compositions of Granodiorite From the Guoganjianian Mountain Area, Central Qiangtang, Northern Tibet, China[J]. Northwestern Geology, 2014, 47(1): 52-60.

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Zircon U-Pb Dating and Hf-isotope Compositions of Granodiorite From the Guoganjianian Mountain Area, Central Qiangtang, Northern Tibet, China

1. College of Earth Science, Jilin University, Changchun 130061, China;
2. Chinese Academy of Sciences, Beijing 100029, China;
3. China University of Geosciences, Beijing 100083, China

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Received Date: January 03, 2014
Revised Date: February 26, 2014
Available Online: July 28, 2022
Published Date: March 04, 2014

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Abstract

Abstract

This paper reports new zircon U-Pb age and Hf-isotope data of granodiorites in Guoganjianian Mountain area, central Qiangtang, northern Tibet, China. Zircon LA-ICP-MS dating for granodiorites yields a weighted mean age of 225.1±2.4Ma. This age is consistent with that of the high pressure metamorphic rocks in this area. Moreover, the zircon εHf(t) values (from -9.8 to -17.6) and T_DM^C model ages (1874—2372 Ma) indicate that they were generated by the partial melting of the Paleo-proterozoic crust. According to regional geological data, the granodiorites of this study probably formed in a volcanic arc tectonic setting and was result of the subduction of Paleo-Tethys Ocean in the Late Triassic.
- Tibetan plateau,
- Qiangtang,
- granodiorite,
- zircon U-Pb dating,
- zircon Hf-isotope

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References (52)

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Zircon U-Pb Dating and Hf-isotope Compositions of Granodiorite From the Guoganjianian Mountain Area, Central Qiangtang, Northern Tibet, China

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Zircon U-Pb Dating and Hf-isotope Compositions of Granodiorite From the Guoganjianian Mountain Area, Central Qiangtang, Northern Tibet, China

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