塔里木盆地断裂世代初探

PRELMINARY APPROACH TO THE FAULTING GENERATIONS OF THE TARIM BASIN

龚铭 邵鸿良 伍泽厚 段铁军

Gong Ming Shao Hongliang Wu Hong Wang Zehou

地矿部石油地质综合大队, 湖北, 江陵, 434100

Comprehensive Research party of petroleum Geology, MGMR

塔里本盆地断裂演出序列经历了4个世代,即加里东期的正断层世代、海西期的逆冲断层世代、印支-燕山期的逆冲-走滑断层世代和喜山期的逆冲-滑脱-走滑断层世代。这种由一元结构世代向三元结构世代的演化,反映了断裂在演化过程中受到了多用多次构造运动的叠加或改造,4个世代的断裂构造反映的区域应力场除Ⅰ世代为甫北向拉张外,其余3个世代均为近南北向挤压应力场。

The faulting evolution of the Tarim Basin has gone through four generations,that is,the normal fault generation of the Caledonian age,the thrust generation of the Haixi age,the thrust-strike-slip fault generation of the Indo-Chinese-Yanshan age and the thrtist-detechment-strike-slip fault generation of the Himalayan age.Stich evolution from an unary structural generation into ternary sturcttiral generations reflects that the faulting is sub-jected to the superimposition or reformation of tectonic movement many stages and many times during the process of evolution.The regional stress fields reflected by the faulted structure of four generations are compressional stress fields close to north-south direction except that the first generation is an extensional stress field of north-south direction.

https://doi.org/10.11781/sysydz199502105