Distribution and Origin of the Late Paleozoic-Mesozoic Rift Systems in the Northern Margin of the Yangtze Block
详细信息
- 责任者：Mao Liguang (Department of Earth Sciences ; Zhejiang University ; Hangzhou 310027 ; China) ; Xiao Ancheng
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(3)
- 关键词：裂谷作用 ; rifting ; 裂谷 ; rifts ; 扬子地台 ; Yangtze Platform
- 页码：p.721-731
- 图表：9 illus., 38 refs.
- 分类号：0300
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
During the Late Permian Changhsingian Stage-Early Triassic Induan Stage, a series of NW-trending deep-water rift basins formed along the northwestern margin of Yangtze block, which are named as the Kaijiang-Liangping rift, the Chengkou-Exi rift and the Jinmen-Dangyang rift respectively from west to east. Giant gas field has been discovered along the edges of the Kaijiang-Liangping rift, which draws broad attention to these rift basins from geologists and oil and gas explorers. In this paper, the authors study the distribution and formation mechanism of these rift systems which have good prospect in oil and gas exploration, and indicate that they were collision rifts forming during the closure of the south Qinling Ocean by the initial contact between the Yangtze Block and the South Qinling orogen.