石油与天然气地质 ›› 2016, Vol. 37 ›› Issue (4): 556-564.doi: 10.11743/ogg20160412

• 油气地质 • 上一篇    下一篇

准噶尔盆地车排子凸起构造演化特征及其成因

胡秋媛1, 董大伟2, 赵利3, 李理4, 李萧1, 孔雪1   

  1. 1. 中国石油大学 胜利学院 油气工程学院, 山东 东营 257000;
    2. 中国石油大学 胜利学院 高等教育研究与 评价中心, 山东 东营 257000;
    3. 中国石化 石油勘探开发研究院 无锡石油地质研究所, 江苏 无锡 214122;
    4. 中国石油大学(华东) 地球科学与技术学院, 山东 青岛 266580
  • 收稿日期:2016-03-02 修回日期:2016-06-06 出版日期:2016-08-08 发布日期:2016-09-06
  • 作者简介:胡秋媛(1984-),女,硕士、讲师,地质学。E-mail:huqiuyuan_1984@163.com。
  • 基金资助:
    国家自然科学基金项目（40772132）；中国石油大学胜利学院春晖计划项目（KY2015006）；中国石油大学胜利学院重点科研计划项目（KY2015013）。

Tectonic evolutionary characteristics and their causes of Chepaizi Uplift in Junggar Basin

Hu Qiuyuan1, Dong Dawei2, Zhao Li3, Li Li4, Li Xiao1, Kong Xue1   

  1. 1. Department of Oil & Gas Engineering, Shengli College of China University of Petroleum, Dongying, Shandong 257000, China;
    2. Higher Education Research and Evaluation Center, Shengli College of China University of Petroleum, Dongying, Shandong 257000, China;
    3. Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214122, China;
    4. School of Geosciences, China University of Petroleum(East China), Qingdao, Shangdong 266580, China
  • Received:2016-03-02 Revised:2016-06-06 Online:2016-08-08 Published:2016-09-06

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摘要： 准噶尔盆地车排子凸起油气资源丰富，其构造演化特征比较独特。基于车排子地区最新的勘探进展，利用平衡剖面技术，对车排子凸起的基本构造特征及活动参数进行定量研究，同时结合构造物理模拟实验再现了研究区的构造演化过程，在时间与空间上进一步系统地探讨了车排子凸起的构造演化特征及其成因。研究认为，车排子凸起自晚石炭世已开始发育，依次经历了强挤压-弱挤压-较弱挤压-弱伸展的演化过程，可分为初始发育（C3-P）、持续隆升（T-J）、稳定埋深（K-E）和局部伸展掀斜（N-Q）4个演化阶段，其构造演化主要受控于晚石炭世以来车排子凸起及邻区构造应力场的重大转变。C3-P时期，受EW向的挤压应力场控制，车排子凸起发生自西向东的“构造逃逸挤压”，凸起东侧发育近SN向的红车断裂带，并在凸起主体部位发育大量近SN向次级逆断层；T-J时期，车排子凸起被置于挤压逆冲楔顶部的NW-SE向挤压应力场中，持续发生隆升，先期逆断层部分继承性活动；K-E时期，整体缓慢下沉，稳定埋深；至N-Q时期，转为NNE向的伸展应力场，局部发生伸展掀斜，发育大量NWW向正断层的同时，先期逆断层部分发生构造负反转。受构造应力场控制，区域构造线则经历了由近SN向到NE-SW向，再到近EW向的重要转变。

关键词: 平衡剖面, 断层系统, 构造逃逸, 构造演化, 车排子凸起, 准噶尔盆地

Abstract: Chepaizi Uplift in Junggar Basin is abundant in oil and gas resources and has unique tectonic evolution history.New understanding of the history was made possible recently with the latest exploration progress in the area.By combining balanced section technique with quantitative analyses of basic tectonic characteristics and activity parameters and physical structure modeling experiments,we discussed systematically in this paper the tectonic evolutionary characteristics and genesis from a spatial and temporal perspective.The result shows that the evolutionary history of the Uplift can be divided into four stages:the initial development stage (C3-P),continuously uplifting stage (T-J),stably burying stage (K-E) and local stretching tilting stage (N-Q),since it was initiated during Late Carboniferous and then went through successively strong-weak-weaker compression and a weak extension.The tectonic evolution was mainly controlled by major changes in the tectonic stress field in the Uplift and its adjacent areas since the Late Carboniferous.During the C3-P period,an eastward "escaping tectonic compression" developed in the Uplift under the control of the E-W compression stress field,leading to the development of the nearly SN-trending Hongche fault belt in the east of the Uplift and large amounts of SN-trending secondary reverse faults in the major part of the Uplift.During the T-J period,the Uplift was in the NW-SE compression stress field on the top of the thrust wedge,and went through continuous uplifting,leading to the inheritance activities of some early reserve faults.During the K-E period,the Uplift experienced integral and slow subsidence and got stably buried.And during the N-Q period,the stress field turned to be NNE-trending extensional stress field,leading to local stretching and tilting.Large amounts of NWW-trending normal faults were developed while some early reverse faults experienced negative structural inversion.Controlled by the tectonic stress field,the regional tectonic line had turned from near SN direction to NE-SW trend and then to EW direction.

Key words: balanced section, fault system, tectonic escape, tectonic evolution, Chepaizi Uplift, Junggar Basin

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