摘要
鄂尔多斯盆地西缘历经多期构造运动,形成现今以逆冲推覆构造为主体,断裂纵横交割的断块组合,地质条件十分复杂。本文从构造演化出发,讨论了区内复杂断块的形态类型特征,着重论述了复杂断块体边界断裂的封闭性以及断块体内部构造配置对煤层气成藏的控制作用。指出逆冲断块的向斜、复向斜区域和构造三角断块区是煤层气成藏的有利区块。
The Western margin of Ordos basin has experienced superimposing tectonic movements, resulting inthe formation of current fault block aggregation which structural framework is mainly overthrust structure andcomplex faults, with complicated geologic condition. From the perspective of geologic evolution, this paperdiscusses the conformation features of fault block, emphatically demonstrates the closure property of the marginof complex fault block and the controlling of the fault block internal structure on accumulation of CBM, andpoints out that the synclinal and synclinorial areas of thrust fault block and structurally triangle fault block areas would be favorable for CBM occurrence.
出处
《中国煤层气》
2006年第1期28-32,46,共6页
China Coalbed Methane
基金
国家重点基础研究发展计划(973计划)项目子项目"煤层气有利储层及其形成机理研究"(项目编号:2002CD211702)资助。
