库车坳陷东段差异构造变形特征及控制因素

发布时间：2018-11-20 10:13

【摘要】：库车坳陷东段不同构造带几何学变形特征和演化过程有所差异,依据最新的地震资料解释成果,对坳陷东段吐格尔明和东秋里塔格2个构造带的构造变形特征进行对比,在此基础上,结合生长地层特征和区域动力环境的转变讨论2个不同构造带的差异演化过程,并对其控制因素进行分析。结果表明:吐格尔明构造带为在古生代凸起和基底断裂基础上经后期构造活动改造而发育的断裂上盘断隆背斜,盐构造发育较少,整体上表现为均一构造变形;东秋里塔格构造带主要构造变形发生在新近纪以来,盐构造较为发育,分层收缩构造变形特征显著。导致这种差异的主要因素为各构造带遭受的应力、先存构造和盐岩沉积厚度不同。
[Abstract]:The geometric deformation characteristics and evolution process of different tectonic zones in the eastern section of Kuqa depression are different. Based on the latest seismic data interpretation results, the structural deformation characteristics of the two tectonic belts in the eastern segment of Kuqa depression, Tugelmine and Dongqiulitag, are compared. On this basis, the different evolution processes of two different tectonic zones are discussed and their controlling factors are analyzed by combining the characteristics of growing strata and the transformation of regional dynamic environment. The results show that the Tugelmine tectonic belt is a faulted uplift anticline developed on the basis of the Paleozoic uplift and basement faults, and the salt structure is less developed, showing a homogeneous tectonic deformation as a whole. The main tectonic deformation of East Qiulitag tectonic belt occurred since Neogene, salt structure is relatively developed, and the characteristics of stratified shrinkage structural deformation are obvious. The main factors leading to this difference are the stress of each tectonic belt, the difference of the thickness of the pre-existing structure and the deposit of salt rock.
【作者单位】：中国石油塔里木油田分公司油气工程研究院;中国石油塔里木油田分公司勘探开发研究院;中国石油大学(北京)地球科学学院;
【基金】：国家科技重大专项“库车前陆冲断带重点区带构造解析及中生界原型盆地研究”(2011ZX05003-004)
【分类号】：P542

【参考文献】