Discovery of the Siling aluminous A-Type Granite in Hangzhou and Its Tectonic Significance

详细信息   

• 责任者：Lu Chengzhong (Zhejiang Institute of Geological Survey ; Hangzhou 311203 ; China) ; Gu Mingguang
• 刊名：Geology in China
• 出版年：2008
• 卷期：35(3)
• 关键词：A型花岗岩 ; A—type granites ; 构造环境 ; tectonic setting ; 浙江 ; Zhejiang
• 页码：p.392-398
• 图表：7 illus., 1 table , 16 refs.
• 分类号：0801
• issnNo：ISSN1000-3657
• isbnNo：CN11-1167/P

摘要

The Siling rock mass, which was formerly regarded as typical S-type granites or reworked anatectic granites, should be aluminous A-type granites. The research suggests that the magma of the granites was mainly derived from the lower crust. The rock mass was emplaced into an extensional environment, which was an important tectono-magmato-thermal event in the early Late Cretaceous. It also indicates that the regional Xiaofeng-Sanmenwan fault and Xuechuan-Huzhou fault were in their extended stage in the early Late Cretaceous.