【摘 要】
：
通过对喀什凹陷的基底结构和变形特征分析认为，喀什凹陷在侏罗纪—中新世期间的沉降主要与塔拉斯—费尔干纳断裂的拉分作用有关；上新世以后的变形受天山和昆仑山山前逆冲作用控
【机 构】
：
中国科学院地质研究所,西北大学地质学系
论文部分内容阅读
通过对喀什凹陷的基底结构和变形特征分析认为，喀什凹陷在侏罗纪—中新世期间的沉降主要与塔拉斯—费尔干纳断裂的拉分作用有关；上新世以后的变形受天山和昆仑山山前逆冲作用控制；凹陷北部斜坡带的变形机制主要是山前重力滑动和山麓逆冲作用。根据与喀什凹陷有类似成因联系的中亚含油气盆地的油气勘探经验预测，喀什凹陷的油气主要赋存于山前构造带向斜盆地内部的低凸起中，下第三系膏盐层为主要勘探标志层。
Based on the analysis of the basement structure and deformation characteristics of the Kashgar depression, it is concluded that the subsidence of the Kashgar sag during the Jurassic-Miocene period is mainly related to the pull-off effect of the Taras-Fergana fault. The deformation after the Pliocene Tianshan and Kunlun Mountains before the thrust control. The deformation mechanism in the northern slope of the depression is mainly the function of the piedmont gravity slide and foothill thrust. Based on the oil and gas exploration experience in the Central Asia petroliferous basins that have similar genetic origins with the Kashgar depression, the oil and gas in the Kashgar sag mainly occurs in the low protuberances in the syncline basins in the Piedmont tectonic belt, Main exploration flag layer.
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