Zircon SHRIMP U-Pb Age, Geochemistry and Genesis of the Youdong Granite in Northern Guangdong Province
详细信息
- 责任者：Huang Guolong (No.290 Research Institute ; CNNC ; Shaoguan 512026 ; China) ; Cao Haojie
- 刊名：Acta Geologica Sinica
- 出版年：2012
- 卷期：86(4)
- 关键词：二云母花岗岩 ; two-mica granite ; 广东 ; Guangdong Province
- 页码：p.577-586
- 图表：9 illus., 3 tables, 41 refs.
- 分类号：0801
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
The Youdong granite, located in the central part of the southern Zhuguang granitic complex, is important uranium-bearing granite. It consists mainly of medium-grained, small porphyritic two-mica granite. SHRIMP U-Pb dating of zircon collected from the granite yields an age of (232±4) Ma (MSWD=3.2), indicating it was the product of granitic magmatic activity in the early Indosinian epoch. Under the tectonic settings, the Youdong granite was formed by partial melting of Paleoproterozoic-Mesoproterozoic argillaceous and arenaceous rocks in the intermediate-lower crust sources under the influence of lithosphere thinning and asthenosphere ascending.
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