| 东昆仑活动断裂带东段全新世滑动速率研究 |
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| 引用本文： | 李春峰,贺群禄,赵国光. 东昆仑活动断裂带东段全新世滑动速率研究[J]. 地震地质, 2004, 26(4): 676-687. DOI: ISSN:0253-4967.0.2004-04-012 |
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| 作者姓名： | 李春峰 贺群禄 赵国光 |
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| 作者单位： | 同济大学海洋地质教育部重点实验室,上海,200092;中国地震局地壳应力研究所,北京,100085 |
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| 基金项目： | 中法合作“东昆仑岩石圈缩短机制研究”课题资助。 |
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| 摘 要： | 文中通过对东昆仑活动断裂带托索湖至玛曲段的实际野外测量,获得了该段上的1组断裂位错实测数据和14C及TL测年样品。通过室内分析研究,发现大体以阿尼玛卿山玛积主峰为界,东昆仑活动断裂带托索湖至玛曲段可再分为花石峡段和玛沁段2个在几何上不连续的段落,花石峡段的全新世水平滑动速率(115±11)mm/a明显高于玛沁段(70±06)mm/a。此外,由于断裂而引起的断裂两侧的差异垂直隆升速率,花石峡段自4kaBP以来约为(21±03)mm/a,玛沁段自10kaBP以来约为055mm/a。这种差异垂直隆升速率的明显变化,一方面反映了东昆仑活动断裂带不同段落上活动的差异,另一方面也可能反映了研究区内全新世以来的快速隆升
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| 关 键 词： | 东昆仑活动断裂带 全新世滑动速率 断错地貌 河流阶地 断层位错 |
| 文章编号： | 0253-4967(2004)04-0676-12 |
| 收稿时间： | 2003-11-17 |
| 修稿时间： | 2003-11-18 |
HOLOCENE SLIP RATE ALONG THE EASTERN SEGMENT OF THE KUNLUN FAULT |
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| LI Chun feng ) HE Qun lu ) ZHAO Guo guang ) ) MOE Laboratory of Marine Geology,Tongji University,Shanghai ,China ) Institute of Crustal Dynamics,China Earthquake Administration,Beijing ,China. HOLOCENE SLIP RATE ALONG THE EASTERN SEGMENT OF THE KUNLUN FAULT[J]. Seismology and Geology, 2004, 26(4): 676-687. DOI: ISSN:0253-4967.0.2004-04-012 |
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| Authors: | LI Chun feng ) HE Qun lu ) ZHAO Guo guang ) ) MOE Laboratory of Marine Geology Tongji University Shanghai China ) Institute of Crustal Dynamics China Earthquake Administration Beijing China |
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| Affiliation: | 1. MOE Laboratory of Marine Geology, Tongji University, Shanghai 200092, China;2. Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China |
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| Abstract: | The Eastern Kunlun Fault zone in northern Tibetan Plateau is one of the largest active fault zones in the world, demonstrated by a composite surface rupture zone of more than 700km long. However, the quantitative studies of the fault zone have remained scarce until recently mostly due to the difficulties of carrying out field investigation in this area. In this paper, we analyze offset values along the fault and their relevant TL and 14 C dating samples collected during our field investigation, from which |
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| Keywords: | Kunlun Fault Holocene slip rate river terrace fault displacement |
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