【摘要】 塔里木西北缘柯坪逆冲带为天山和塔里木盆地在中新生代盆山耦合过程中形成,为印度板块和欧亚板块碰撞影响最显著的地区之一.柯坪地区存在两种方向的构造,即NE向逆冲推覆构造和NW向的走滑构造及潜伏构造.在NE逆冲带的走向上,推覆构造变形样式从南向北,以寒武纪蒸发岩作为主要的滑动拆离面——薄皮逆冲,到北部地区卷入元古界结晶基底的逆冲推覆构造.根据变形时代分析,NW向构造为长期发育的巴楚隆起,形成时代为中生代早期,近NE向的柯坪逆冲构造形成于新生代,同时也形成NW向的走滑构造.早期形成的巴楚隆起构造南北两侧发育的阿瓦提盆地和塔里木盆地西南为生油区,巴楚隆起为油气运移指向区.更多还原

【Abstract】 The Kalpin thrust belt, northwest Tarim is an actively deforming district affected by the Indian-Eurasia collision, that is caused by the coupling between the Tianshan and Tarim basin during the Cenozoic time. Two types of structural deforming styles exist in the Kalpin district, NE-striking thrust and NW-striking strike-slip fault and buried structures. The thrust belt varies largely from thin-skinned thrust faults as the main decollement horizon of the Cambrian evaporates in southern, to Precambrian and Proterozoic basement-involved thrust faults in north along the strike. The deformation time indicated that NW-striking Bachu uplift formed in the early Mesozoic time, NE-striking thrust belt and NW-striking strike-slip faults formed in the Cenozoic time. The migration of the hydrocarbon from the thick depocenters in the Kashi and Awati depression toward the Bachu uplift, which should be further explored.更多还原