【摘要】 松辽盆地深层包括古中央隆起带、东部断陷带和西部断陷带3个一级构造单元,每个构造单元又可划分为断阶带、洼槽带、斜坡带和单元间的隆起带,每个构造带由受断裂控制的多个断背斜、断块组成;深层断裂体系由基底断裂、同沉积断层及局部小断裂构成。指出各构造单元具有火山活动与构造运动双重成因机制,断裂与火山活动共同控制了深层的构造格局及地层发育,也控制了火山岩相的类型与分布;断裂活动引起的或与断裂活动伴生的火山活动导致火山物质对盆地的充填、改造或塑造盆地次级单元构造样式和盆地构造格局,使得不同构造部位地层发育具有明显的差异性;火山岩的特征表现为高位喷发,低位填充的特征,沿火山口一带厚度较大。更多还原

【Abstract】 The deep zone of the Songliao basin includes three first-order structural units: palaeo-central uplift belt,eastern fault depression and western fault depression.Every unit is further divided into fault step belt,depression land,ramp region,and uplift zone between depression zones.Every structural zone consists of many faulted anticlines and block faults controlled by faulting.The deep zone fault system is composed of basement rifts,growth faults and small fractures.The whole structural unit presents both volcanic activities and tectonic movements.Faulting and volcanic actions together dominate the structural frame and formation development of the deep zone,as well as the types and distribution of volcanic facies.Volcanic activities caused by or associated with faulting lead to the basin filling of volcanic materials,reconstruct or mold the types of secondary units and structural frame of the basin,and make different tectonic positions develop differently.Volcanics are characterized by high-level eruption and low-level filling,having larger thickess along the crater.The deep zone fault system dominates the distribution of the volcanic massif and volcanic facies.更多还原