| 青海热水-日月山断裂带古地震的初步研究 |
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| 引用本文： | 袁道阳,刘小龙,刘百篪,张培震. 青海热水-日月山断裂带古地震的初步研究[J]. 地震工程学报, 2003, 25(2): 136-142 |
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| 作者姓名： | 袁道阳 刘小龙 刘百篪 张培震 |
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| 作者单位： | 1. 中国地震局兰州地震研究所,甘肃,兰州,730000
2. 中国地震局地质研究所,北京,100029 |
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| 基金项目： | 国家重点基础研究发展规划项目(G1998040701-04)，国家杰出青年基金(49825104)，地震科学联合基金(102055)资助，中国地震局兰州地震研究所论著号:LC2002043 |
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| 摘 要： | 热水—日月山断裂带是青藏高原东北缘柴达木—祁连山活动地块内部一条重要的NNW向的右旋走滑活动断裂带.断裂活动形成了一系列山脊、冲沟和阶地等右旋断错微地貌及断层崖、断层陡坎等垂直断错微地貌.本文对发生在该断裂带上的古地震事件开展了研究,综合探槽剖面和断层陡坎年代,大致可以确定两次古地震事件,其年代分别为距今6280±120a,2220±360a,复发间隔约4000a左右.
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| 关 键 词： | 青海 热水—日月山活动断裂 古地震 |
| 文章编号： | 1000-0844(2003)02-0136-07 |
| 收稿时间： | 2002-08-16 |
| 修稿时间： | 2002-08-16 |
A PRELIMINARY STUDY ON PALAEO-EARTHQUAKE EVENTS OF THE REISHUI-RIYUE MT. ACTIVE FAULT ZONE IN QINGHAI PROVINCE |
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| YUAN Dao-yang,LIU Xiao-long,LIU Bai-chi and ZHANG Pei-zhen. A PRELIMINARY STUDY ON PALAEO-EARTHQUAKE EVENTS OF THE REISHUI-RIYUE MT. ACTIVE FAULT ZONE IN QINGHAI PROVINCE[J]. China Earthguake Engineering Journal, 2003, 25(2): 136-142 |
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| Authors: | YUAN Dao-yang LIU Xiao-long LIU Bai-chi ZHANG Pei-zhen |
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| Affiliation: | Lanzhou Institute of Seismology, CSB, Gansu Lanzhou 730000, China,Lanzhou Institute of Seismology, CSB, Gansu Lanzhou 730000, China,Lanzhou Institute of Seismology, CSB, Gansu Lanzhou 730000, China and Institute of Geology, CSB, Beijing 100029, China |
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| Abstract: | Reishui-Riyue Mt. active fault zone is a very important NNW oriented right-lateral strike-slip active fault zone which developed in the Chaidam-Qilian Mt. active crustal block, northeastern margin of Qinghai-Tibet Plateau. The activity of the fault causes a series of micro-geomorphologies, such as ridge, valley and terrace, right-lateral offseted and forms fault cliff and fault scarp et al. vertical offset micro-geomorphology. In this paper, the palaeo-earthquake events on the fault are studied. Combining the trench profiles and fault scarp measurement, two palaso-earthquake events are determined, which occured in 6 280 ±120 a B. P. and 2 220 ±360 a B. P., the recurrence interval is about 4 000 a. |
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| Keywords: | Qinghai province Reishui-Riyue Mt. active fault zone Palaeo-earthquake |
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