首页 | 本学科首页   官方微博 | 高级检索  
     检索      

柴达木盆地狮子沟-油砂山构造带变形特征及成因模拟
引用本文:于福生,王彦华,李学良,李晓剑,冯自成.柴达木盆地狮子沟-油砂山构造带变形特征及成因模拟[J].大地构造与成矿学,2011,35(2):207-215.
作者姓名:于福生  王彦华  李学良  李晓剑  冯自成
作者单位:中国石油大学油气资源与探测国家重点实验室;河北省第五地质大队;
基金项目:中国石油天然气股份有限公司青海油田分公司“柴西复杂构造综合地质建模与圈闭解释技术研究(07-01Z-X)”; 国家自然科学基金项目(40972091)资助
摘    要:通过地震剖面解释、平衡剖面编制、构造物理模拟等综合研究,认为狮子沟-油砂山构造带具有垂向分层、走向分段变形特征.垂向上以T3地震反射层为界划分为深、浅两个构造层,深层变形样式为正断层组成的地堑、半地堑、反转半地堑组合,浅层变形样式为滑脱断层、冲起背斜构造组合.走向上可划分为狮子沟、油砂山、大乌斯三个构造段,其变形样式分...

关 键 词:柴达木盆地  狮子沟构造带  变形特征  成因机制  物理模拟

Deformation Characteristics and Genesis Simulation of the Shizigou-Youshashan Structural Belt in Qaidamu Basin
YU Fusheng,WANG Yanhua,LI Xueliang,LI Xiaojian,FENG Zicheng.Deformation Characteristics and Genesis Simulation of the Shizigou-Youshashan Structural Belt in Qaidamu Basin[J].Geotectonica et Metallogenia,2011,35(2):207-215.
Authors:YU Fusheng  WANG Yanhua  LI Xueliang  LI Xiaojian  FENG Zicheng
Institution:YU Fusheng1,WANG Yanhua2,LI Xueliang1,LI Xiaojian1 and FENG Zicheng1(1.State Key Laboratory of Petroleum Resources and Processing,China University of Petroleum,Beijing 102249,China,2.No.5 Geological Brigade of Hebei Bureau of Geological Survey,Tangshan 063000,Hebei,China)
Abstract:Our studies of the seismic profiles,balanced profiles as well as physical simulation show that the deformation of the Shizigou-Youshashan structural belt is characterized by longitudinal zonation and vertical stratification. Graben,half graben and inverted half graben are mayor structural styles within deep beds under seismic reflection layer of T3. Décollement structure including the faults and folds developed within the shallow layers above seismic reflection layer of T3. Three structure sections of the Shizigou,Youshashan and Dawusi are divided from west to east. Décollement anticline of the shallow layers superimposing reversed faults of deep layers formed in the west part of the Shizigou structure section. Detachment folds superimposing invertion structure developed in the east part of the Shizigou structure section. Back thrusting overlaping reversed faults formed in the Youshashan structure section and detachment faults overlaying back thrust faults developed in the Dawusi structure section. The structure evolution of the Shizigou-Youshashan structural belt can be divided into five phases,including chasmic stage from Early Jurassic to Middle Jurassic,compressional depression from Late Jurassic to Late Cretaceous,weakly rifting stage from Palaeocene to Eocene,weakly compressing stage from Oligocene to Miocene and intensely compressing stage from Pliocene to Quaternary. Results of physical simulation suggest that stretching structure in early stage is controlled by extensional stress related to sinistral strike-slip of the Altyn Tagh Fault,and compressing structure in late stage is controlled by anisopleural compression stress related to uplifting of the Kunlun mountain. Maldistribution of gypsum rocks is key factor controlling the compressional deformtion.
Keywords:Qaidamu basin  Shizigou structural belt  structure evolution  deformation characteristics  physical simulation  
本文献已被 CNKI 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号