地质科学2018，Vol.53Issue(1)：185-206,22.DOI:10.12017/dzkx.2018.012
沙湾凹陷及邻区石炭—二叠纪伸展构造特征及其构造演化
Extensional structural feature and the stage of tectonic evolution of Shawan sag, Junggar in Carboniferous-Permian
摘要
Abstract
Geometry characteristics of extensional fault depression in Shawan sag and its adjacent area:Carboniferous-Permian are discussed in detail with the theory of fault-related fold by combining the characteristics of the cross section of tectonic geology based on seismic and drilling data;then the stratum growth index and inversion rate are calculated on this basis,which further reveals the kinematic characteristics and formation evolution process of construction of Shawan sag and its adjacent area:Carboniferous-Permian.It is concluded from the research that Shawan sag and its adjacent area:A total of 16 faults are recognized in Shawan sag and its adjacent:Carboniferous-Permian,among them,5 normal faults,6 thrust faults and 5 early normal faults have been reversed;Medium-Late Carboniferous-Early Permian in Junggar Basin are the extensional fault depression environment of north-south extruding and west-east stretching,the Early Permian-Late Fengcheng group is changed into the NW-SE compression environment after deposition,some of the early normal faults reverse and form a series of insidious uplift zones;It can be drawn from the calculation of stratum growth index and the inversion rate of sectional tectonic units that the growth index of stratum in northwestern margin and the inversion rate of structural units are generally higher in the study area,and the southern margin in the study area are relatively low.关键词
沙湾凹陷/伸展构造/石炭—二叠纪/地层生长指数/反转率/构造演化Key words
Shawan sag/Extensional structure/Carboniferous-Permian/Growth-index/Inversion ratio/Tectonic evolution分类
天文与地球科学引用本文复制引用
吴松涛,何登发,郑孟林,刘德波,吴海生..沙湾凹陷及邻区石炭—二叠纪伸展构造特征及其构造演化[J].地质科学,2018,53(1):185-206,22.基金项目
新疆油田公司勘探开发研究院项目“沙湾凹陷—莫索湾凸起地区石炭—二叠系地质结构及构造演化研究”(编号:xjyt-yjy-kyktzb-2016-05)资助. （编号:xjyt-yjy-kyktzb-2016-05）
