Zircon U-Pb Dating, Tectonic Setting and Ore-bearing Properties Evaluation of the Caledonian Yangbu Pluton in South Jiangxi

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

Rock and Mineral Analysis > 2012 > 31(3): 530-535.

ZHAO Zhi, CHEN Zhen-yu, CHEN Zheng-hui, HOU Ke-jun, ZHAO Zheng, XU Jian-xiang, ZHANG Jia-jing, ZENG Zai-lin. Zircon U-Pb Dating, Tectonic Setting and Ore-bearing Properties Evaluation of the Caledonian Yangbu Pluton in South Jiangxi[J]. Rock and Mineral Analysis, 2012, 31(3): 530-535.

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Zircon U-Pb Dating, Tectonic Setting and Ore-bearing Properties Evaluation of the Caledonian Yangbu Pluton in South Jiangxi

1.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Ministry of Land and Resources, Institute of Mineral Resources, Chinese Academy of Geological Science, Beijing 100037, China
2.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Ministry of Land and Resources, Institute of Mineral Resources, Chinese Academy of Geological Science, Beijing 100037, China
3.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Ministry of Land and Resources, Institute of Mineral Resources, Chinese Academy of Geological Science, Beijing 100037, China
4.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Ministry of Land and Resources, Institute of Mineral Resources, Chinese Academy of Geological Science, Beijing 100037, China
5.
Key Laboratory of Metallogeny and Mineral Resource Assessment, Ministry of Land and Resources, Institute of Mineral Resources, Chinese Academy of Geological Science, 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

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Received Date: December 26, 2011
Revised Date: March 20, 2012

Abstract

ABSTRACT

The Yangbu pluton is one of the famous Rare earth element granitoid plutons in South Jiangxi, but it lacks precise isotopic chronological data. In this paper, we present research for the zircon U-Pb chronology of the Yangbu pluton by using Laser Ablation-Multicollector Inductively Coupled Plasma-Mass Spectrometry (LA-MC-ICPMS). The yield weighted average ²⁰⁶Pb/²³⁸U age is (461.1±1.3) Ma, which illustrates that the Yangbu pluton formed in the Middle Ordovician period. Granitic plutons, Yangbu, Shanzhuang (in the Wugong Mountains), Shangyou (in South Jiangxi) and Yunkai Mountain, have the same zircon U-Pb ages, which are products of the first peak period of magmatism during the Late Caledonian period in southern China, indicating a new cycle of folding and orogeny. Geochemical dates of Caledonian granitoids in Jiangxi Province show that most of them with higher ∑REEs content have a major necessary condition of mineralization mother rock of weathered-crust type REEs deposits. Therefore, they should be considered during ore-bearing properties evaluation and ore prospecting .
- Yangbu,
- pluton,
- zircon,
- U-Pb,
- age

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