| 塔里木盆地晚志留世-石炭纪伸展构造的发现及其地质意义 |
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| 引用本文： | 李日俊,孙龙德,杨海军,张光亚,曾昌民,冯晓军,文磊,张强,贾铁干.塔里木盆地晚志留世-石炭纪伸展构造的发现及其地质意义[J].地质科学,2014,0(1):30-48. |
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| 作者姓名： | 李日俊 孙龙德 杨海军 张光亚 曾昌民 冯晓军 文磊 张强 贾铁干 |
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| 作者单位： | 1. 中国科学院地质与地球物理研究所 北京 100029;
2. 中国石油天然气股份有限公司 北京 100007;
3. 中国石油塔里木油田分公司 新疆库尔勒 841000;
4. 中国石油勘探开发研究院 北京 100083 |
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| 基金项目： | 国家科技重大专项“全球重点大区石油地质特征与油气分布规律”(编号:2011ZX05028-003);塔里木油田资助 |
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| 摘 要： | 通过精细的地震资料解释，在塔里木盆地中部的满西地区发现晚志留世-石炭纪伸展构造。伸展构造由一系列规模不大的正断层组成，平面上组成两条北东-南西向的左行雁列状正断层带，剖面上构成负花状构造和堑垒构造。根据生长系数计算结果，正断层形成于晚志留世，在泥盆纪和石炭纪持续活动，于石炭纪末停止活动。正断层活动的高峰期为晚志留世。该期伸展构造在塔中和塔北地区也有发育，反映当时塔里木盆地处于区域性伸展构造背景。塔里木盆地晚志留世-石炭纪的伸展构造，是昆仑早古生代晚期（晚奥陶世-中志留世）碰撞造山后构造应力松弛作用的产物。
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| 关 键 词： | 塔里木盆地 地震解释 晚志留世-石炭纪正断层 左行张扭性断层带 负花状构造 堑垒构造 生长系数 昆仑加里东碰撞造山作用 造山后应力松弛 |
| 收稿时间： | 2013-05-06 |
| 修稿时间： | 2013-05-06; |
New discovery of Late Silurian-Carboniferous extensional structure in Tarim Basin and its geological significance |
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| Li Yuejun,Sun Longde,Yang Haijun,Zhang Guangya,Zeng Changmin,Feng Xiaojun,Wen Lei,Zhang Qiang,Jia Tiegan.New discovery of Late Silurian-Carboniferous extensional structure in Tarim Basin and its geological significance[J].Chinese Journal of Geology,2014,0(1):30-48. |
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| Authors: | Li Yuejun Sun Longde Yang Haijun Zhang Guangya Zeng Changmin Feng Xiaojun Wen Lei Zhang Qiang Jia Tiegan |
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| Institution: | 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029;
2. PetroChina Company Limited, Beijing 100007;
3. Tarim Oil-field Company, PetroChina, Korla, Xinjiang 841000;
4. Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083 |
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| Abstract: | After careful seismic interpretation,Late Silurian-Carboniferous extensional structures were revealed in western Manjiaer Sag,central Tarim Basin. These extensional structures comprise many small normal faults which usually group sinistral en echelon and form 2 tenso-shear normal fault zones. Combinations of the normal faults in profile become negative flower structures and small horst-graben structures. On the basis of growth index calculation,the normal fault formed in Late Silurian,continue active in Devonian and Carboniferous,ceased at the end of Carboniferous. The peak-stage of normal fault activity is Late Silurian. Late Silurian-Carboniferous normal fault also developed in Tazhong and Tabei areas,implying that Tarim Basin was under regional extensional tectonic setting in Late Silurian-Carboniferous. The extensional structure is the result of post-orogeny stress relaxation of Kunlun Caledonian orogenic belt. |
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| Keywords: | Tarim Basin Seismic interpretation Late Silurian-Carboniferous normal fault Tenso-shear normal fault zone Negative flower structure Graben-horst structure Kunlun Caledonian collision orogeny Post-orogeny stress relaxation |
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