The Petrogenesis of the Jingde Granodiorite and Its MMEs: Constraints from Geochemistry, Zircon U-Pb Dating and Hf Isotopic Compositions
详细信息
- 责任者：Zhang Junjie (Key Laboratory of Mineralogy and Metallogeny ; CAS ; Guangzhou Institute of Geochemistry ; Chinese Academy of Sciences ; Guangzhou 510640 ; China) ; Wang Guangjie
- 刊名：Acta Petrologica Sinica
- 出版年：2012
- 卷期：28(12)
- 关键词：暗色岩 ; trap rocks ; 花岗闪长岩 ; granodiorites ; 铀—铅计时 ; U-Pb dating ; 安徽 ; Anhui Province
- 页码：p.4047-4063
- 图表：8 illus., 3 tables, 90 refs.
- 分类号：0801
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Petrographic features, whole-rock major and trace elements, zircon U-Pb dating and Hf isotopic compositions are reported for the granodiorite and its mafic microgranular enclaves（MMEs） from the Jingde pluton, South Anhui Province. Considering the tectonic evolution of eastern China in the Early Cretaceous-Late Jurassic era, the authors proposed that the Jingde granodiorite was formed by lower crust partial melting triggered by slab rollback.