A Discussion on the Formation of Granite in the Pearl River Mouth Basin
详细信息
- 责任者：Liu An (Wuhan Institute of Geology and Mineral Resources ; China Geological Survey ; Wuhan 430223 ; China) ; Wu Shimin
- 刊名：Earth Science Frontiers
- 出版年：2011
- 卷期：18(1)
- 关键词：花岗岩 ; granite ; 珠江口盆地 ; Zhujiangkou Basin
- 页码：p.141-148
- 图表：5 illus., 3 tables, 31 refs.
- 分类号：0801
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
The analysis of the geochemical and geophysical characteristics of Yanshan Period granite in the Pearl River Mouth Basin suggested that the uplifting of the lithosphere isothermal surface and multiple melting of the upper crust, which resulted from the subduction of the Pacific plate under South China Plate, gave rise to the formation of the granite. The granite dome and drape anticline on the uplifting part of the basin was formed by the regional erosion and the sedimentation in the Cenozoic afterwards. The drape anticline was one of the most important tectonic types of oil and gas bearing structure in Pearl River Mouth Basin. The Dongsha Rise and its northern region are characterized by high-temperature geothermal field in Mesozoic and the granite, while the southern depression is featured by lower-temperature geothermal field and the Mesozoic sedimentary.