塔里木色力布亚—玛扎塔格断裂系与油气

DEFORMATION OF SERIKBUYA-MAZARTAG FAULT SYSTEM IN TARIM AND ITS RELATION WITH OIL-GAS

色力布亚—玛扎塔格断裂是塔里木盆地内长期活动的主要断裂之一，始于海西晚期，印支—燕山期继续活动，喜山期多次强烈活动。断裂带构造变形以扭压或压扭构造为主要特征。局部应力场变化导致沿断裂走向上断裂活动方式及相关褶皱特点发生了变化。该断裂多次活动为塔西南坳陷油气生成、运移、聚集提供了良好条件，麦盖提斜坡成为西南坳陷油气勘探目标区块的主要因素。

Serikbuya-Mazartag fault system, one of the major active faults in Tarim basin,was formed at the late Hercynian, and continued to work at Yinzhi-Yanshanian stage, and acted intensely and repeatedly at Xishanian stage. The structural deformation of fault zone is mainly characterized by compresso-shear structure or shearing compressive structure. Local change of stress field led to the change of action mode of faults along the strike and associated folds. The repeated action of faults supplies a good condition for the generation, migration and storage of oil-gas in the southwest Tarim depression, and is a major factor for Makit slope to become an oil-gas exploration target in the Southwest Tarim depression.