石油学报 ›› 2005, Vol. 26 ›› Issue (4): 1-4,11.DOI: 10.7623/syxb200504001

• 地质勘探 •    下一篇

受盐层影响的前陆褶皱-冲断带构造特征——以库车秋立塔克构造带为例

余一欣1,2, 汤良杰1,2, 王清华3, 杨文静3, 彭更新3, 雷刚林3   

  1. 1. 中国石油大学石油天然气成藏机理教育部重点实验室 北京 102249;
    2. 中国石油大学盆地与油藏研究中心 北京 102249;
    3. 中国石油塔里木油田公司勘探开发研究院 新疆库尔勒 841000
  • 收稿日期:2004-10-25 修回日期:2005-03-02 出版日期:2005-07-25 发布日期:2010-05-21
  • 作者简介:余一欣,男,1977年9月生,2003年获石油大学(北京)硕士学位,现为中国石油大学(北京)在读博士研究生,主要从事盆地分析和构造地质研究.E-mail:yuxin0707@163.com
  • 基金资助:
    国家自然科学基金项目(40472107、40172076);国家重点基础研究发展规划(973)项目(G19990433)联合资助.

Structural features of foreland fold-thrust belt influenced by salt beds——Taking Qiulitake structural belt as an example

YU Yi-xin1,2, TANG Liang-jie1,2, WANG Qing-hua3, YANG Wen-jing3, PENG Geng-xin3, LEI Gang-lin3   

  1. 1. Key Laboratory of Education Ministry for Hydrocarbon Accumulation Mechanism, China University of Petroleum, Beijing 102249, China;
    2. Basin and Reservoir Research Center, China University of Petroleum, Beijing 102249, China;
    3. Research Institute of Petroleum Exploration and Development, Petrochina Tarim Oilfield Company, Kuerle 840000, China
  • Received:2004-10-25 Revised:2005-03-02 Online:2005-07-25 Published:2010-05-21

摘要: 褶皱-冲断带和盐相关构造均十分发育的秋立塔克地区构造极其复杂,该地区新生界内部存在两套起滑脱层作用的膏盐层.受滑脱层位置变化影响,垂向上和平面上的构造变形特征均具有很大差别.地震剖面识别出的构造样式主要有盐焊接、断层滑脱褶皱、断层传播褶皱、断层转折褶皱、三角带及其混生构造样式和基底卷入型断层相关褶皱等.秋立塔克地区盐相关构造形成的主要动力是挤压应力,其形成过程主要经历了楔状地层、滑脱背斜、滑脱断层和对冲断裂形成4个阶段.

关键词: 前陆褶皱-冲断带, 盐相关构造, 断层相关褶皱, 滑脱层, 形成机制

Abstract: Fold-thrust belts and salt-related structures are very prevalent in the Kuqa foreland fold-thrust belt of Tarim Basin in Northwest China.The seismic data interpretation and field observation on the structural features of Qiulitake structural belt in the leading edge of Kuqa foreland fold-thrust belt show that there are two layers of halite acting as detachment levels in the Cenozoic of this area.The structural features in perpendicular and horizontal domains are very different as the result of the variety of the halite-detachment levels.The interpretation of seismic profiles indicates that the structural styles mainly include salt welddings,fault-detachment folds,fault-propagation folds,fault-bend folds,triangle zones and their composites,as well as basement-involved fault-related folds.Influenced by the north-south compressive stress,the evolution of salt-related structures in Qiulitake region experienced four stages of wedged-bed formation,detachment fold,detachment fault and opposite-thrusting faults.

Key words: foreland fold-thrust belt, salt-related structures, fault-related folds, detachment levels, formation mechanism

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