Zircon U-Pb Dating and Hf Isotopic Compositions of Granite Porphyry and Rhyolite Porphyry from Jingniu Basin in the Middle-Lower Yangtze River Belt and Its Geological Significance
详细信息
- 责任者：Li Ruiling (Development of Geological and Research Center ; China Geological Surveys ; Beijing 100037 ; China) ; Zhu Qiaoqiao
- 刊名：Acta Petrologica Sinica
- 出版年：2012
- 卷期：28(10)
- 关键词：花岗斑岩 ; granite porphyry ; 流纹斑岩 ; rhyolite porphyry ; 铀—铅计时 ; U-Pb dating ; 长江中下游成矿带 ; Metallogenic Belt of Middle and Lower Reaches of Yangtze River
- 页码：p.3347-3360
- 图表：illus., 3 tables, 40 refs.
- 分类号：0801
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The Jinniu basin located in Southeast Hubei ore cluster,is one of volcanic basins of the Middle-Lower Yangtze Reaches metallogenic belt. The zircon U-Pb dating of rhyolite porphyry yielded an age of (128±1) Ma in central of the Wubaihao area from Jinniu basin,its (176Hf/177Hf)i and εHf(t) values are ranging from 0.28 247 to 0.28 262 and -2.5 to -7.7,respectively.The granite porphyry and rhyolite porphyry from Jingniu basin are derived from mixture enriched mantle and crustal.Both volcanic rocks and sub-volcanic rocks in the Jinniu basin were coeval with those in the Luzong,and Ningwu basins in the Middle-Lower Yangtze River Belt.The hydrothermal gold deposits and porphyry iron deposits have been paid attention in the Jinniu Basin in the future.
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