新疆库鲁克塔格地区构造应力场解析  

Study on structural stress fields of Kuruktag area,Xinjiang,China

作　　者：张鹏[1] 侯贵廷[1] 潘文庆[2] 齐英敏[2] 孟庆峰[1] 

机构地区：[1]造山带与地壳演化教育部重点实验室、北京大学地球与空间科学学院,北京100871 [2]塔里木油田勘探开发研究院,新疆库尔勒841000

出　　处：《地质科学》2014年第1期69-80,共12页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家自然科学基金项目“华北南缘基性岩墙群侵位机制研究”(编号:40772121);塔里木油田项目“塔里木盆地震旦一寒武系白云岩优质储层发育展布规律与有利勘探区带选择”资助

摘　　要：通过对库鲁克塔格地区的构造地质演化分析,将该地区震旦系以来较强构造变形的构造应力场分4个时期:早古生代、晚古生代、中生代和新生代。根据节理、褶皱和岩墙等应力感构造的测量分析,得出库鲁克塔格地区及其周缘的4个时期构造应力场的最大主压应力方向分别为北北东向、北西西—北西向、北东向和北北东—近南北向。基于对新近纪以来库鲁克塔格地区构造应力场的二维有限元模拟,进一步对该地区应力场的分布特征、边界几何形态对应力场的影响等问题进行了讨论与分析。Four periods of structural stress fields can be recognized since Sinian System in Kuruktag and adjacent areas based on structural evolution analysis, that is Early Paleozoic, Later Paleozoic,Mesozoic and Cenzoic. Their maximum principal stress orientation are respectively NNE,NWW-NW,NE and NNE-SN, which are derived from the occurrence data of the stress response structures, i.e., joints, folds and dykes. Furthermore, the author simulated the stress field since Neogene based on 2D finite element method, to deeply analyze the following questions ：Distribution and direction of stresses in the study area, influence of the geometry model for the stress field, as well as the dynamics of structures related to stress field.

关 键 词：库鲁克塔格地区 构造应力场 最大主应力 岩墙 节理 褶皱 

分 类 号：P542.3[天文地球—构造地质学]