【摘要】 通过充分利用野外地质调查资料、深入分析关键层位的地震反射特征以及合理利用造山带构造变形理论,建立起西昆仑山前冲断带东段柯东构造的构造解释模型。柯东构造总体上具有"后缘基底卷入,前缘盖层滑脱"的特征,发育基底卷入的冲断构造、断层转折褶皱、三角带构造以及被动顶板构造等构造样式。柯东构造的开始发育时间为上新世末,西域砾岩沉积之后基本定型。主干剖面构造平衡恢复研究表明:柯东构造第四纪构造缩短率为36.7%,缩短速率为7.52 mm/a。2009年7月中国石油塔里木油田分公司根据该构造模型所成的构造图钻探柯东1井;2010年4月该井获高产工业油气流,是塔西南山前带柯克亚凝析气田发现33年之后取得的又一重大突破。更多还原

【Abstract】 Through making full use of the data obtained from field geologic investigation,deeply analyzing reflecting characteristics of the bottom of Paleogene,and logically selecting tectonic theories of orogeny,structural model of Kedong structural belt is set up.The Kedong structure is characterized by "hinder basement-involved structure and front caprock detachment structure", and includes the following structural styles:basement-invlolved thrust structure,fault-bend fold, triangle zone structure and passive roof recoiled fault.Regional geological data and growth strata show that Kedong structure developed in Late Pliocene and finalized after Early Pleistocene. The results are obtained from structure-stratigraphy balance restoration of the inline geological section that structural shorten ratio of Kedong structure in Quaternary is 36.7% and structural shorten rate is about 7.52 mm/a.Tarim oilfield company drilled Kedong 1 on June 14,2009 based on the structural model and high commercial hydrocarbon flow is obtained on April 4, 2010,which is significant to the exploration in the southwestern Tarim Basin.更多还原