| 天桥沟-黄羊川活动断裂带的几何学和运动学特征 |
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| 引用本文： | 戴华光,陈永明,苏向洲,刘洪春.天桥沟-黄羊川活动断裂带的几何学和运动学特征[J].西北地震学报,1999,21(3):259-267. |
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| 作者姓名： | 戴华光 陈永明 苏向洲 刘洪春 |
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| 作者单位： | 中国地震局兰州地震所,甘肃,兰州,730000 |
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| 基金项目： | 国家地震局“八五”重点资助项目 |
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| 摘 要： | 依据１ ：５０ ０００ 地质填图资料，对天桥沟—黄羊川活动断裂带晚更新世以来的几何学和运动学特征进行了详细的论述．认为该断裂带可分为逆走滑（ 左旋） 的天桥沟断裂段和正走滑（ 左旋） 的黄羊川断裂段，其主要活动时期是晚更新世，滑动速率为４ ～５ ｍ ｍ／ａ ．全新世早期，该断裂带活动强度逐渐减弱，其最后一次活动的时间为距今０ ．７５９ ×１０４ ～１ ．０２ ×１０４ 年
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| 关 键 词： | 甘肃 活动断裂带 走滑断层 天桥沟—黄羊川活动断裂带 断裂分段 滑动速率 |
| 收稿时间： | 1999/3/23 0:00:00 |
| 修稿时间： | 1999-03-23 |
GEOMETRY AND KINEMATICS CHARACTERISTICS OF TIANQIAOGOU-HUANGYANGCHUAN ACTIVE FAULT ZONE |
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| DAI Hua-guang,CHEN Yong-ming,SU Xiang-zhou and LIU Hong-chun.GEOMETRY AND KINEMATICS CHARACTERISTICS OF TIANQIAOGOU-HUANGYANGCHUAN ACTIVE FAULT ZONE[J].Northwestern Seismological Journal,1999,21(3):259-267. |
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| Authors: | DAI Hua-guang CHEN Yong-ming SU Xiang-zhou and LIU Hong-chun |
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| Affiliation: | Lanzhou Institute for Seismology, CSB, Lanzhou 730000, China,Lanzhou Institute for Seismology, CSB, Lanzhou 730000, China,Lanzhou Institute for Seismology, CSB, Lanzhou 730000, China and Lanzhou Institute for Seismology, CSB, Lanzhou 730000, China |
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| Abstract: | According to data of field geological investigation,geometry and kinematics characteristics of Tianqiaogou-Huangyangchuan active fault zone since later Pleistocene are described in detail.The fault zone may be divided into Tianqiaogou segment showing inverse left lateral strike slip nature and Huangyangchuan segment showing normal left lateral strike slip nature.Main active period of the fault zone is Pleistocene and its slip rate is 4~5 mm/a.In early Holocene,its active strength gradually became low,and the latest palaeoearthquake on the fault occurred 0.759×104~1.02×104 years ago. |
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| Keywords: | Gansu Active fault zone Strike slip fault Tianqiaogou-Huangyangchuan active fault zone Fault segmentation Slip rate |
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