[1]李光涛,程 理,吴 昊,等.雅鲁藏布江下游沿岸更新世末—全新世软沉积物变形构造特征、成因及其地质意义[J].华南地震,2019,39(增刊):109-117.[doi:10.13512/j.hndz.2019.S1.018]
　LI Guangtao,CHENG Li,WU Hao,et al.Soft Sediment Deformation Along the Lower Reaches of the Brahmaputra River and Its Geological Significance[J].South China journal of seismology,2019,39(增刊):109-117.[doi:10.13512/j.hndz.2019.S1.018]
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雅鲁藏布江下游沿岸更新世末—全新世软沉积物变形构造特征、成因及其地质意义()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
39
期数:
2019年增刊
页码:
109-117
栏目:
华南地震
出版日期:
2019-10-31

文章信息/Info

Title:
Soft Sediment Deformation Along the Lower Reaches of the Brahmaputra River and Its Geological Significance
作者:
李光涛; 程 理; 吴 昊; 苏 刚
中国地震灾害防御中心，北京 100029
Author(s):
LI Guangtao; CHENG Li; WU Hao; SU Gang
China Earthquake Disaster Prevention Center，Beijing 100029，China
关键词:
雅鲁藏布江; 震积岩; 软沉积物变形; 古地震
Keywords:
Brahmaputra river; Seismites; Soft sediment deformation; Ancient earthquake
DOI:
10.13512/j.hndz.2019.S1.018
文献标志码:
A
摘要:
林芝地区雅鲁藏布江下游位于喜马拉雅东构造结附近，这里一直是青藏高原构造演化的重要地区，许多断裂活动和重要构造事件都发生在该地区。通过对雅鲁藏布江沿岸大量软沉积物沉积类型、特征和成因等观察分析，发现了大量与地震活动有关的震积岩，形成了与地震活动有关的多种类型的软沉积物变形构造。主要包括液化卷曲变形、层内错断、负载构造和火焰构造等，表明了该区曾遭受过大范围的地震活动和构造运动。通过对该区软沉积物变形构造的研究，有助于补充该区古地震记录，这对于研究该区的构造活动性具有重要的地质意义。
Abstract:
The middle and lower reaches of the Brahmaputra River in the Nyingchi area are located near the eastern Himalayan tectonic knot and have been an important area for the tectonic evolution of the Qinghai-Tibet. Many fault activities and important tectonic events occurred in this area. Through observation and analysis of the types, characteristics and genesis of a large number of soft sediments along the Brahmaputra River, a large number of seismic base rocks related to seismic activity were discovered, and various types of soft sediment deformation structures related to seismic activity were formed. It mainly includes liquefaction crimp deformation, intra-layer fault, load structure, flame structure, etc. It shows that the area has suffered from a wide range of seismic activities and tectonic movements. The study of the soft sediment deformation structure in this area will help to supplement the paleoearthquake record of the area，which has important geological significance for studying the tectonic activity of the area.

备注/Memo

备注/Memo:
收稿日期：2019-02-26 基金项目：中国地震灾害防御中心主任基金项目（2220045016）；雅鲁藏布江下游地区区域构造稳定性研究项目（011518） 作者简介：李光涛（1980- ），男，助研，硕士，主要从事地震地质、构造地质等研究。E-mail：taoguangli521@163.com. 通信作者：苏 刚（1961-），男，副研究员，硕士，主要从事地震地质、构造地质等研究。E-mail：565894914@qq.com.
更新日期/Last Update: 2019-12-06