Evolution Characteristics and Physical Simulation of Tianjingshan Structure in Northern Longmenshan
详细信息
- 责任者：Li Qing (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Li Zhongquan
- 刊名：Fault-Block Oil and Gas Fields
- 出版年：2013
- 卷期：20(1)
- 关键词：构造演化 ; structural evolution ; 龙门山断裂带 ; Longmenshan Fault Zone
- 页码：p.24-28
- 图表：illus., 19 refs.
- 分类号：0300
- issnNo：ISSN1005-8907
- isbnNo：CN41-1219/TE
摘要
The orogenic process of Tianjingshan was reproduced based on seismic,drilling,field survey data and equilibrium profile method.The evolution of Tianjingshan Region can be divided into extension basin(Sinian-Late Middle Triassic),continental emergence extension evolution stage(Late Triassic-Late Middle Jurassic),lifting and denudation stage(Late Jurassic-Early Cretaceous) and reformation succession stage(Late Cretaceous-present).Through structural physical simulation experiment,it is preliminarily confirmed that the thin-skinned structure developed during the Indo-Chinese epoch was formed by the combined action of the southnorth extrusion stress and northwest-southeast gravity gliding;that during the Himalaya period,Tianjingshan Region was deformed into imbricate thrust structural combination;that the Tianjingshan structure has multiple decollement layers,which form incoordinated structural deformation with layered deformation and vertical superposition.