摘要
滚动背斜是两期构造运动的产物:第一期,在区域张应力作用下形成正断层;第二期,在区域性压应力作用下形成滚动背斜。滚动背斜的形成和展布受同期同生断层的控制。滚动背斜常位于这些同生断裂的下降盘,呈串珠状分布。这些同生断层早期可作为油气运移的通道,而后期又被改造为封闭性压性结构面,利于油气的保存.因而使滚动背斜成为良好的油气圈闭。
Rollovet anticlines were the products of two tectogenesises: the first was the formation of normal faults under theregional tensile stress .thc second was the formation of the rollover anticlines under the regional compressive stress. Theformation and distribution of the rollover anticlines were controlled by the synchronous growth faults. The rolloveranticlines were generally located in the downthrow walls of the growth faults and distributed like beads. The growthfaults in their early stage could act as migration paths for oil and gas. In the late stage. the growth faults were re-formed into sealed compressive structural planes and were favourable to the preservation of oil and gas. Therefore ,therollover anticlines could become advantageous traps for oil and gas.
出处
《新疆石油地质》
CAS
CSCD
北大核心
1993年第4期385-389,共5页
Xinjiang Petroleum Geology
关键词
滚动背斜
圈闭
油气藏
形成机理
Rollover anticline
Growth fault
Tensile stress
Compressive stress
Trap for oil and gas
