Zircon U-Pb Dating of the Hunandong-granite and Its Caledonian Tectonic Significance, South Jiangxi-East Hunan Province

WANG Yong-lei; CHEN Zhen-yu; CHEN Zheng-hui; HOU Ke-jun; ZHAO Zheng; XU Jian-xiang; ZHANG Jia-jing; ZENG Zai-lin

2012 Vol. 31, No. 3

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Article navigation > Rock and Mineral Analysis > 2012 > 31(3): 525-529

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WANG Yong-lei, CHEN Zhen-yu, CHEN Zheng-hui, HOU Ke-jun, ZHAO Zheng, XU Jian-xiang, ZHANG Jia-jing, ZENG Zai-lin. Zircon U-Pb Dating of the Hunandong-granite and Its Caledonian Tectonic Significance, South Jiangxi-East Hunan Province[J]. Rock and Mineral Analysis, 2012, 31(3): 525-529.

Citation:

Zircon U-Pb Dating of the Hunandong-granite and Its Caledonian Tectonic Significance, South Jiangxi-East Hunan Province

1.
Key Laboratory of Metallogeny and Mineral Assessment, Ministry of Land and Resources, Institute of Mineral Resource, Chinese Academy of Geological Sciences, Beijing 100037, China
2.
Key Laboratory of Metallogeny and Mineral Assessment, Ministry of Land and Resources, Institute of Mineral Resource, Chinese Academy of Geological Sciences, Beijing 100037, China
3.
Key Laboratory of Metallogeny and Mineral Assessment, Ministry of Land and Resources, Institute of Mineral Resource, Chinese Academy of Geological Sciences, Beijing 100037, China
4.
Key Laboratory of Metallogeny and Mineral Assessment, Ministry of Land and Resources, Institute of Mineral Resource, Chinese Academy of Geological Sciences, Beijing 100037, China
5.
Key Laboratory of Metallogeny and Mineral Assessment, Ministry of Land and Resources, Institute of Mineral Resource, Chinese Academy of Geological Sciences, Beijing 100037, China
6.
Department of Land and Resources of Jiangxi Province, Nanchang 330000, China
7.
Department of Land and Resources of Jiangxi Province, Nanchang 330000, China
8.
Geological Survey Team of Gannan, Ganzhou 341000, China

Received Date: 19 December 2011

Revised Date: 29 March 2012

Publish Date: 28 June 2012

Abstract

Abstract

Hunandong granite located on the border of Hunan and Jiangxi, intruded into the Linyang granite. Based on the investigation of field geology, detailed zircon U-Pb age measurements were done on the Hunandong granite. These zircons have high Th/U ratio with zonal structure, which indicate magmatic zircons. The zircon U-Pb age is (447.2±1.8) Ma, which shows that the Hunandong granite was formed in the late Ordovician period, reflecting the important stage of Caledonian magmatism. According to the result together with other information published, the authors think that the formation of Hunandong granite may be related to the amalgamation and collision between Cathaysian block and Yantze block, providing strong evidence for further understanding the Caledonian magmatism and its geodynamic process in South China.
- Hunandong /
- granite /
- LA-MC-ICPMS