柴达木盆地近SN向构造形成机制与油气成藏意义  

GENETIC MECHANISM OF NEARLY N-S-TRENDING STRUCTURE IN THE QAIDAM BASIN AND THEIR SIGNIFICANCE FOR FORMATION OF HYDROCARBON ACCUMULATIONS

作　　者：操成杰[1] 王小凤[1] 

机构地区：[1]中国地质科学院地质力学研究所,北京100081

出　　处：《地质力学学报》2005年第1期74-80,共7页Journal of Geomechanics

基　　金：中国地质调查局项目<陆上油气新区资源战略调查与评价>(编号200110110002);青海油田科技项目<柴西地区构造应力场流体势场对油气运聚的控制作用>(编号ZLJL7 2 07)

摘　　要：近SN向构造在中国中西部各盆地都有发现,其规模不大,但对油气成藏却具有显著的控制作用。在相关课题研究成果的基础上,依据大量钻探、物探、实验分析和测试等资料,以及构造形迹分析、构造运动的沉积响应、古地温场的响应和磁组构分析资料,较为系统地阐述了柴达木盆地新生代构造应力场特征,探讨了柴达木盆地内近SN向构造形成的力学机制及其在油气成藏中的突出地位和作用。Nearly N-S-trending structures are found in all basins of west-central China. They are not large in scale but have a marked controlling effect on the formation of hydrocarbon accumulations. On the basis of the research results of relevant subjects, combined with a wealth of drilling, geophysical, experimental and analytical data, and through studies of structural features, sedimentary response to tectonic movement and response to the subsurface paleotemperature field and magnetic fabric analysis, the paper systematically elucidates the features of the Cenozoic tectonic stress field in the Qaidam basin and discusses the dynamic mechanism of the formation of nearly N-S-trending structures and their prominent position and role in the formation of hydrocarbon accumulations in the Qaidam basin.

关 键 词：柴达木盆地 油气成藏 形成机制 SN 中国中西部 构造应力场 控制作用 研究成果 实验分析 构造形迹 沉积响应 构造运动 组构分析 古地温场 力学机制 构造形成 新生代 钻探 物探 

分 类 号：P618.130.2[天文地球—矿床学] O122.7[天文地球—地质学]