Geochronology and Geochemistry of the Yeshan and Shanlichen Adakitic Intrusive Rocks in the Eastern Yangtze Block: Petrogenesis and Its Geodynamic Implications
详细信息
- 责任者：Zi Feng (Institute of Geology ; Hunan University of Sciences and Technology ; Xiangtan 411201 ; China) ; Wang Qiang
- 刊名：Acta Mineralogica Sinica
- 出版年：2011
- 卷期：31(2)
- 关键词：埃达克岩 ; adakite ; 元素地球化学 ; elements geochemistry ; 地球动力学 ; geodynamics ; 扬子地台 ; Yangtze Platform ; 郯庐断裂带 ; Tancheng-Lujiang Fault Zone
- 页码：p.185-200
- 图表：13 illus., 4 tables, 67 refs.
- 分类号：0801
- issnNo：ISSN1000-4734
- isbnNo：CN52-1045/P
摘要
The Yeshan and Shanlichen plutons are tectonically located in the eastern Yangtze Block and to the east of the Tan-Lu Fault Belt (TLFB).The Yeshan and Shanlichen intrusive rocks mainly consist of quartz diorite porphyries. They have hornblende and biotite with 40Ar/39Ar plateau ages of (131.22 ± 0.77) Ma and (130.07 ±0.48) Ma, respectively. Chronological data indicate that the Cretaceous adakitic magmatism occurring along both sides of the TLFB may be closely related to the transitions from left-lateral strike-slip to extensional movement of the TLFB due to the subduction of Paleo-Pacific Plate.