| 塔里木盆地顺南地区走滑断裂发育特征及演化 |
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| 引用本文： | 孔永吉,吴孔友,刘寅.塔里木盆地顺南地区走滑断裂发育特征及演化[J].地质与资源,2020,29(5):446-453. |
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| 作者姓名： | 孔永吉 吴孔友 刘寅 |
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| 作者单位： | 中国石油大学(华东) 地球科学与技术学院, 山东 青岛 266580 |
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| 基金项目： | 中科院先导科技A类专项“深层油气形成与分布预测”（XDA14010301）；国家科技重大专项（2017ZX05001003-004）. |
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| 摘 要： | 顺南地区位于塔里木盆地塔中隆起北部.受多期构造应力影响，该地区以走滑断裂大量发育为典型特征.对三维地震资料的精细解释和深入分析结果表明，研究区走滑断裂具有垂向分层、平面分段、多期次构造叠加的特征.顺南地区主要发育北东、北东东和北西向3组走滑断裂.北东向断裂活动性强，平面上发育雁列式断层及马尾状构造，剖面上主要发育对称花状、正花状与负花状上下分层叠置的复合花状构造.北东东和北西向断裂活动性较弱，剖面上以单条直立走滑断裂为主，平面上呈线性延伸或由多段同向走滑断层连接而成.根据断层构造样式和受力性质，将顺南1断裂沿走向划分为4段：2个复合花状-拉张段和2个简单花状-挤压段，拉张段和挤压段沿走向交替出现.顺南走滑断裂的形成主要经历了5期构造运动：加里东早期、加里东中期Ⅰ幕、加里东中期Ⅲ幕、加里东晚期-海西早期和海西晚期.其中，加里东中期Ⅰ幕和加里东中期Ⅲ幕为该区主要断层活动期.
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| 关 键 词： | 走滑断裂 构造演化 花状构造 三维地震解释 塔里木盆地 |
| 收稿时间： | 2020-03-11 |
DEVELOPMENT AND EVOLUTION OF THE STRIKE-SLIP FAULTS IN SHUNNAN AREA,TARIM BASIN |
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| KONG Yong-ji,WU Kong-you,LIU Yin.DEVELOPMENT AND EVOLUTION OF THE STRIKE-SLIP FAULTS IN SHUNNAN AREA,TARIM BASIN[J].Geology and Resources,2020,29(5):446-453. |
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| Authors: | KONG Yong-ji WU Kong-you LIU Yin |
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| Institution: | School of Geosciences and Technology, China University of Petroleum, Qingdao 266580, Shandong Province, China |
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| Abstract: | Shunnan area, located in the northern Tazhong uplift of Tarim Basin, is affected by multi-stage tectonic stress with a large number of developed strike-slip faults. Detailed interpretation and deep analysis of 3D seismic data show the faults are varied in vertical and plane views with multi-stage structural superposition. There are mainly 3 groups, i.e. NE, NEE, and NW, of strike-slip faults developed in the study area. The NE-trending faults are highly active, with en echelon and horsetail structures developed on the plane, and composite flower structures of symmetric flower, positive and negative flowers superimposed on the profile; while the NEE and NW faults are less active, with single vertical strike-slip fault dominated on the profile, and linear extension or multi-section synthetic strike-slip faults connected on the plane. According to the structural style and stress property, the FSN1 can be divided into 4 segments along the strike, including 2 composite flower-tensional segments and 2 simple flower-compressional segments, which occur alternately along the strike. The strike-slip faults mainly went through 5 stages of tectonic movements:the Early Caledonian, Episode I of Middle Caledonian, Episode III of Middle Caledonian, Late Caledonian-Early Hercynian and Late Hercynian, among which, the second and third are the main stages for fault activity. |
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| Keywords: | strike-slip fault tectonic evolution flower structure 3D seismic interpretation Tarim Basin |
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