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J4 ›› 2011, Vol. 17 ›› Issue (2): 308-317.

• 盐构造 • 上一篇    下一篇

库车前陆盆地新生代盐构造特征及形成机制:物理模拟和讨论

尹宏伟,王哲,汪新,吴珍云   

  1. 南京大学 地球科学与工程学院
  • 收稿日期:2011-01-06 修回日期:2011-03-17 出版日期:2011-06-20 发布日期:2011-06-20
  • 作者简介:尹宏伟,男,1971年生,博士,教授,主要从事构造分析和构造物理、数值模拟等领域的研究工作; E-mail: hwyin@nju.edu.cn
  • 基金资助:

    自然科学基金(40802134)和国家科技重大专项(2008ZX05009-001, 2008ZX05029-002)

Characteristics and Mechanics of Cenozoic Salt-Related Structures in Kuqa Foreland Basins: Insights from Physical Modeling and Discussion

 YIN Hong-Wei, WANG Zhe, WANG Xin, WU Zhen-Yun   

  1. School of Earth Sciences and Engineering, Nanjing University
  • Received:2011-01-06 Revised:2011-03-17 Online:2011-06-20 Published:2011-06-20
  • About author:Yin Hongwei, Professor. E-mail: hwyin @ nju.edu.cn

摘要:

膏盐层的存在对库车前陆盆地构造变形与演化具有重要的影响,导致了盐上构造与盐下构造形态的明显不同。盐上
构造以宽缓的褶皱为主,而盐下构造则以紧密排列的冲断层为主。我们采用构造物理模拟方法对库车盐构造变形演化过程
和变形机制进行了分析。研究表明,库车盐构造变形主要受区域挤压和同构造沉积作用的影响。在克拉苏构造带,盐构造
形成、演化的主控因素为区域挤压作用,而在构造带前缘的秋里塔格构造带,盐构造的主控因素则为邻区拜城凹陷的巨厚
同构造沉积。

关键词: 库车前陆盆地, 物理模拟, 盐构造, 秋里塔格

Abstract:

Salt  layer has a significant  influence on  the structural deformation and evolution of Kuqa  foreland basin. Structural
styles are quite different in the strata beneath and above salt. Strata above salt are mainly deformed by broad folding, while strata
beneath salt are mostly deformed by closely-spaced thrusts. Based on scaled physical experiments, we investigate the deformation
pattern and mechanics of Kuqa salt-related structures. Modeling  results show  that Kuqa salt-related structures are primarily
controlled by  regional compression and growth sedimentation. Salt structures near  the back end, such as Kelasu  fold belt, are
controlled by regional compression, and salt structures near the front end, such as Qiulitake fold belt, have a significant influence
from the heavy growth sedimentation in the nearby Baicheng syncline.

Key words: Kuqa foreland basin, physical modeling, salt structure, Qiulitake

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