Geochemical Features and Tectonic Setting of the Nanyili Granite in the Pingwu Area, Northwestern Sichuan Province

• 责任者：Li Zuochen (Key Laboratory of Western China’s Mineral Resources and Geological Engineering ; Ministry of Education ; Faculty of Earth Science and Resources ; Chang’an University ; Xi’an 710054 ; China) ; Pei Xianzhi
• 刊名：Acta Geologica Sinica
• 出版年：2009
• 卷期：83(2)
• 关键词：花岗岩 ; granite ; 四川 ; Sichuan Province
• 页码：p.260-271
• 图表：10 illus., 2 tables, 102 refs.
• 分类号：0801
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

The late Indosinian Nanyili granite, exposing in the southern margin of the Bikou area, was analyzed and discussed so as to better understand its genesis, ore-forming material source and structural setting. The results show that the Nanyili granite is high in SiO₂ (71.29%~73.05%) and Al₂O₃ contents, slightly low ratio of FeO/(FeO+MgO), has A/CNK ratios ranging 1.07-1.11. All these characteristics suggests that it belongs to typical peraluminous granite.