|本期目录/Table of Contents|

[1]刘兴旺,袁道阳,邵延秀,等.甘肃迭部—白龙江南支断裂中东段晚第四纪构造活动特征[J].地球科学与环境学报,2015,37(06):111-119.
　LIU Xing-wang,YUAN Dao-yang,SHAO Yan-xiu,et al.Characteristics of Late Quaternary Tectonic Activity in the Middle Eastern Segment of the Southern Branch of Diebu Bailongjiang Fault, Gansu[J].Journal of Earth Sciences and Environment,2015,37(06):111-119.
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第37卷
期数:
2015年第06期
页码:
111-119
栏目:
基础地质与矿产地质
出版日期:
2015-11-15

文章信息/Info

Title:
Characteristics of Late Quaternary Tectonic Activity in the Middle Eastern Segment of the Southern Branch of Diebu Bailongjiang Fault, Gansu
文章编号:
1672-6561(2015)06-0111-09
作者:
刘兴旺; 袁道阳; 邵延秀; 吴赵
1. 中国地震局兰州地震研究所，甘肃 兰州 730000； 2. 兰州地球物理国家野外科学观测研究站，甘肃 兰州 730000； 3. 兰州大学 资源环境学院，甘肃 兰州 730000；4. 兰州大学 西部环境教育部重点实验室，甘肃 兰州 730000
Author(s):
LIU Xing-wang;  YUAN Dao-yang;  SHAO Yan-xiu;  WU Zhao
1. Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, Gansu, China;2. Lanzhou National Observatory of Geophysics, Lanzhou 730000, Gansu, China; 3. School of Earth Environmental Sciences, Lanzhou University, Lanzhou 730000, Gansu, China;4. Key Laboratory of Western China’s Environmental Systems of Ministry of Education, Lanzhou University, Lanzhou 730000, Gansu, China
关键词:
活动断裂; 晚第四纪; 滑动速率; 阶地; 全新世; 迭部—白龙江断裂; 甘肃
Keywords:
active fault;  Late Quaternary;  slip rate;  terrace;  Holocene;  Diebu-Bailongjiang fault;  Gansu
分类号:
P546
DOI:
-
文献标志码:
A
摘要:
通过卫星影像解译、野外实地调查与地质填图，对甘肃东南部迭部—白龙江南支断裂中东段晚第四纪构造活动特征进行了研究。结果表明：迭部—白龙江南支断裂中段活动性明显强于东段；中段线性特征明显，可见清晰的断崖，不同期次的阶地之上都有断层陡坎发育，晚第四纪以来有过明显活动，最新活动的离逝时间为1 300年左右，属于全新世活动断裂；东段活动性明显减弱，没有发现断错全新世地层的证据，在地貌上多表现为线性沟谷，属于晚更新世断裂。根据对断错阶地的测量和年代测试，迭部—白龙江南支断裂中段左旋滑动速率为每年(1.3±0.1)mm，垂直滑动速率为每年(0.39±0.04)mm。
Abstract:
Based on satellite image interpretation, field survey and geological mapping, the characteristics of Late Quaternary tectonic activity in the middle-eastern segment of the southern branch of Diebu-Bailongjiang fault, Gansu, were discussed. The results show that the activity of the middle segment of the southern branch of Diebu-Bailongjiang fault is stronger than that of the eastern segment; the characteristic along the middle segment is significantly linear, and the scar and fault scarp cutting through several terraces can be easily distinguished; the middle segment is active since Late Quaternary, and the elapsed time of the last event should be less than about 1 300 years; the middle segment is Holocene active fault; the activity of the eastern segment is obviously weakened, and there is no evidence of Holocene fault; the landform in the eastern segment is a linear valley, and the eastern segment is Late Pleistocene fault. According to the measurement of fault terrace and dating, the left-lateral and vertical slip rates are (1.3±0.1) mm and (0.39±0.04) mm per year in the middle segment of the southern branch of Diebu-Bailongjiang fault.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-05-18
基金项目:中国地震局地震预测研究所基本科研业务费专项资金项目(2011IESL01);“十二五”国家科技支撑计划项目(2011BAK12B05)
作者简介:刘兴旺(1980-),男,山东东营人,中国地震局兰州地震研究所副研究员,兰州大学理学博士研究生,E-mail:lxw_27@163.com。
更新日期/Last Update: 2015-11-27