|本期目录/Table of Contents|

[1]徐晓雅,林凤仙,赵淑芳.金沙江涛源盆地构造现象研究*[J].地震研究,2019,42(01):133-143.
 XU Xiaoya,LIN Fengxian,ZHAO Shufang.Research on Tectonic Phenomena of Taoyuan Basin in the Jinsha River[J].Journal of Seismological Research,2019,42(01):133-143.
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金沙江涛源盆地构造现象研究*(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
42
期数:
2019年01期
页码:
133-143
栏目:
出版日期:
2019-04-20

文章信息/Info

Title:
Research on Tectonic Phenomena of Taoyuan Basin in the Jinsha River
作者:
徐晓雅林凤仙赵淑芳
(昆明南方地球物理技术开发有限公司,云南 昆明 650224)
Author(s):
XU XiaoyaLIN FengxianZHAO Shufang
(Kunming Nanfang Geophysical Technology Development Co. Ltd,Kunming 650224,Yunnan,China)
关键词:
涛源盆地 金沙江河谷断裂 共轭正断层 发震构造 粘滑
Keywords:
Taoyuan basin Jinsha River Valley fault conjugate normal faults seismogenic structure stick slip
分类号:
P315.22
DOI:
-
摘要:
通过对金沙江涛源盆地东缘断裂活动性的调查和探测,在该盆地内发现许多有地震地质意义的构造现象。分析显示:涛源盆地东缘的金沙江河谷断裂是由一组晚更新世以来活动的铲式正断层组成,以粘滑为主,距今大约4.5万年以来的垂直活动速率为0.6 mm/a; 盆地内的NW—NWW向断层是一组与金沙江河谷断裂共轭活动的正断层,距今2.2~4.4万年发生过一次7级左右的地震位错事件; 程海—宾川断裂中段的潜在震源区震级上限宜取7.5级。
Abstract:
Through investigating and detecting the activity of faults in the east margin of the Taoyuan basin,some structure phenomena with seismic geological significance have been discovered. The analyze results show that the Jinsha River Valley faults on the eastern margin of the Taoyuan basin are composed of a group of listric normal faults with stick slip mainly since late-Pleistocene,and its vertical movement rate was 0.6 mm/a since about 45 ka。The NW—NWW strike faults in the basin are a group of normal faults conjugate with the Jinsha River Valley fault,and an earthquake about M7 occurred between 22 ka and 44 ka. The upper limit of the magnitude of the potential earthquake source in the middle section of the Chenghai-Binchuan faults should be taken as 7.5.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-08-08

更新日期/Last Update: 2019-04-25