| 藏西南纳木那尼峰地区第四纪以来的冰川演化 |
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| 引用本文： | 杨建强,易朝路,L.A.Owen,N.Davis.藏西南纳木那尼峰地区第四纪以来的冰川演化[J].第四纪研究,2006,26(2):211-219. |
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| 作者姓名： | 杨建强 易朝路 L.A.Owen N.Davis |
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| 作者单位： | 1. 中国科学院青藏高原研究所,北京,100085
2. Department of Geology,University of Cincinnati,OH 45221-0013 USA |
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| 基金项目： | 中国科学院资助项目;国家重点基础研究发展计划(973计划);中国科学院科研项目;中国科学院"百人计划";中国科学院寒区旱区环境与工程研究所冰冻圈与环境联合重点实验室基金 |
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| 摘 要： | 藏西南纳木那尼峰地区第四纪以来经历了多阶段的冰川演化,遗留了各个阶段不同类型的冰川堆积地貌和冰川侵蚀地貌。文章通过对各阶段冰积地貌的分布范围、特征的描述,并根据保存程度确定其相对地貌年龄,初步认为本地区第四纪以来倒数第3次冰期发育了规模最大的冰原冰川,倒数第2次冰期时冰原缩小并逐渐解体,末次冰期以来完全解体为山谷冰川。根据本地区槽谷的形态特征及冰川堆积物的分布,认为本地区末次间冰期前后有一次活跃的构造运动。
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| 关 键 词： | 第四纪 冰川演化 纳木那尼峰 槽谷 |
| 文章编号： | 1001-7410（2006）02-211-09 |
| 收稿时间： | 2005-11-10 |
| 修稿时间： | 2006-01-15 |
GLACIER EVOLUTION SINCE QUATERNARY IN NAIMONA'NYI PEAK REGION, SOUTHWEST OF TIBETAN PLATEAU |
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| Yang Jianqiang,Yi Chaolu,L.A.Owen,N.Davis.GLACIER EVOLUTION SINCE QUATERNARY IN NAIMONA''''NYI PEAK REGION, SOUTHWEST OF TIBETAN PLATEAU[J].Quaternary Sciences,2006,26(2):211-219. |
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| Authors: | Yang Jianqiang Yi Chaolu LAOwen NDavis |
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| Institution: | 1 Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085 ; 2 Department of Geology, University of Cincinnati, OH 45221 - 0013 USA |
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| Abstract: | Naimona'nyi Peak,lies in the southwest of Tibetan Plateau,has undergone several stages of glaciation since the Quaternary,judging from the glacial relics of deposit landscapes and erosion landscapes.Based on the distribution and geomorphological characteristics of the deposited moraines,the relative ages are estimated and it is concluded that there have been varied glaciers during the Mindel Glaciation,the Riss Glaciation,the Last Glaciation,the Lateglaical,the Newglacial,and the Little Ice Age respectively. Glaciers were small icefields extending in Pulan Basin during the Mindel Glaciation.The icefields were restricted in the piedmont with radiating glacier tongues during the Riss Glaciation.Glaciers were advanced in both the early and the late stages of the Last Glaciation.Beheaded troughs are common in this region,distributing around the Namorangri Valley and the Ronguo Valley,and are accompanied with capturing valleys and valleys without tails.All of these indicated a considerable tectonic movement during the glacial-interglacial cycle.Judging from the shape of the troughs,the deposits in the troughs,and the glacial evolution,it was presumed that the tension tectonic movement occurred around the interglacial after Riss Glaciation. |
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| Keywords: | Pleistocene glacier evolution Naimona'nyi Peak trough |
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