龙门山北段天井山构造特征及成因模拟  

Characteristics and physical simulation of the structural features of of Tianjing mountain north of Longmen mountain

作　　者：李卿[1] 李忠权[1] 刘爱疆[2] 张玮[2] 罗春[3] 李娟[1] 

机构地区：[1]成都理工大学油气藏地质及开发工程国家重点试验室,四川成都610059 [2]成都理工大学地球物理学院,四川成都610059 [3]四川省地质矿产勘查开发局水文地质工程中心,四川成都610081

出　　处：《东北石油大学学报》2012年第6期1-7,共7页Journal of Northeast Petroleum University

基　　金：国家自然科学基金重点项目(41030426);四川省青年科技基金项目(03ZQ026-046;05JY029-088-2)

摘　　要：根据地震资料、钻井和野外调查等研究,认为天井山构造带广泛发育重力滑动构造、断层转折褶皱、倒转背斜和双重构造等构造样式.天井山构造带变形具有垂向分层特点:上部构造主要为断层转折褶皱,02tjs10测线附近变形强度最大,向两端变形逐步减弱;下部构造为多个逆冲岩片叠置所构成的双重构造.通过构造物理模拟实验,证实天井山构造带在北西—南东向挤压应力作用下变形序列为前展式逆冲叠瓦式构造组合;天井山构造带存在多个滑脱层系,才会形成分层变形、垂向叠置的不协调收缩构造变形.该研究可以为天井山构造带乃至龙门山油气勘探提供指导.According to the comprehensive study of the earthquake and field surveys,Tianjing mountain Tectonic zone has wide range of developmental of structural styles such as gravitational gliding tectonics,fault-bend fold,overturned anticline and dual structure.The deformation characteristics of Tianjing mountain Tectonic zone is vertical stratification.By the construct physical simulation experiments,proving that the Tianjing mountain tectonic zone thin-skinned structure which developed in Indosinian is controlled by south-north compressive stress and northwest-southeast gravity gliding.In the Himalayan period,the deformation sequence of Tianjing mountain tectonic zone is piggy-back thrust imbricate structure combination controlled by south-north compressive stress.The Tianjing mountain tectonic zone has more than one detachment systems.In the decollement,there are hierarchical deformation and vertical stacking of uncoordinated contraction of tectonic deformation formed.

关 键 词：龙门山北段 天井山 物理模拟 造山过程 挤压应力 滑脱层系 构造样式 

分 类 号：TE121.2[石油与天然气工程—油气勘探]