| 鄂尔多斯盆地西缘马家滩地区冲断带断裂特征及其控藏模式 |
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| 引用本文：罗群.2008.鄂尔多斯盆地西缘马家滩地区冲断带断裂特征及其控藏模式[J].地球学报,29(5):619-627. |
| DOI：10.3975/cagsb.2008.05.12 |
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| 基金项目:中国地质调查局地质大调查项目(编号:DKD2001008) |
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| 中文摘要:马家滩地区构造格架受基底断裂控制,具有东西分带、南北分块的特征;发育北部花状断裂系统、中部反转—冲断断裂系统和西部叠瓦—逆冲断裂系统3大断裂系统;形成挤压走滑型和反转冲断型(或逆掩推覆型)两类11种断裂组合样式,存在拉张—压扭、长期拉张—晚期挤压反转等8种断裂活动模式;油气藏受断裂控制而沿断裂展布,受断裂系统控制,发育断裂一输导层运移体系输导一正花状构造圈闭聚集—源外油气运聚成藏;断裂一输导层运移体系输导—断裂反转构造圈闭聚集—源内(古生界)源外(中生界)油气运聚成藏;断层—输导层运移体系输导—逆掩断层背斜(断鼻)构造聚集—源内(古生界)源外(中生界)油气藏成藏模式3种类型的断裂控藏模式。 |
| 中文关键词:断裂控制 油气藏 模式 鄂尔多斯 马家滩 |
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| Characteristics of Faults in Majiatan Area of West Ordos Basin and Their Petroleum Reservoir Controlling Model |
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| Abstract:The tectonic framework in Majiatan is controlled by basement faults and has the features of belting in east-west direction and blocking in north-south direction. There are three fault systems, namely, flower-fault system in the north, inversion-thrust fault system in the central part, and imbricate structure-obduction zone fault system in the west, forming two classes of pressure-strike slip and inversion-thrust faults and eleven kinds of fault combinations. The study area has eight kinds of fault growing models, and the distribution of petroleum reservoirs is controlled by faults. This paper sums up three kinds of models for fault controlling petroleum accumulation: ①fault-reservoir strata transporting-flower structure traps accumulating hydrocarbon in the source rock; ② fault-reservoir strata transporting-fault inversion structure traps accumulating hydrocarbon outside the source rock; ③ fault-reservoir strata transporting-thrust fault structure traps accumulating hydrocarbon outside the source rock. |
| keywords:fault control petroleum accumulation model Ordos Basin Majiatan area |
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