| 西藏阿里阿伊拉日居山脉第四纪冰川作用 |
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| 引用本文： | 朱大岗,孟宪刚,邵兆刚,杨朝斌,韩建恩,杜建军,余佳,孟庆伟.西藏阿里阿伊拉日居山脉第四纪冰川作用[J].地质学报,2005,79(5):700-709. |
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| 作者姓名： | 朱大岗 孟宪刚 邵兆刚 杨朝斌 韩建恩 杜建军 余佳 孟庆伟 |
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| 作者单位： | 1. 中国地质科学院地质力学研究所,北京,100081
2. 西藏自治区国土资源厅,拉萨,850000 |
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| 基金项目： | 中国地质调查局项目“青藏高原第三纪重点古湖泊环境演变序列”(编号科[2005]005-02)资助成果。 |
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| 摘 要： | 在西藏阿里阿伊拉日居山脉南北两麓及切割山脉的各沟谷中,分布着4套早更新世以来的冰川沉积物。根据这些冰川沉积物的地层层序和冰川沉积物的电子自旋共振(ESR)年龄测定结果,将阿伊拉日居山脉南北两麓所发生的4次早更新世以来的冰川作用,分别命名为札达冰期(1161-952 ka BP)、阿伊拉日居冰期(762-730 ka BP)、学朗冰期(336-211 ka BP)和弄穷冰期(105-15 ka BP),并与青藏高原及其他地区冰期进行了对比。各次冰期的冰川性质分别为大型山岳冰川、冰帽、山麓冰川和中小型山谷冰川。全新世时期,现代冰川有过冰川推进。近期冰川则发生了明显的后退。
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| 关 键 词： | 阿伊拉日居山脉 第四纪 冰川作用 早更新世冰期 冰期划分 |
| 修稿时间： | 2005年2月18日 |
Quaternary Glaciation in the Ayila Rigyu Mountains of the Ali Area, Xizang |
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| ZHU Dagang,MENG Xiangang,SHAO Zhaogang,YANG Chaobin,HAN Jian''en,DU Jianjun,YU Ji,MENG Qingwei Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing, The Land and Resources.Quaternary Glaciation in the Ayila Rigyu Mountains of the Ali Area, Xizang[J].Acta Geologica Sinica,2005,79(5):700-709. |
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| Authors: | ZHU Dagang MENG Xiangang SHAO Zhaogang YANG Chaobin HAN Jian'en DU Jianjun YU Ji MENG Qingwei Institute of Geomechanics Chinese Academy of Geological Sciences Beijing The Land and Resources |
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| Abstract: | Along the south and north feet, as well as in individual valleys of the Ayila Rigyu Mountains, Ali area, Xizang (Tibet) there are four sets of early Pleistocene glacial deposits. Based on the stratigraphic sequence of the glacial deposits and the glacial ages determined with the electron spin resonance, the four glacial events in the early Pleistocene are named the Zomda glacial epoch (1161- 952 ka BP), the Ayila Rigyu glacial epoch (762-730 ka BP) , the Xuelang glacial epoch (336 - 211 ka BP) and the Nongqiong glacial epoch (105 - 15 ka BP). Comparisons were done between these glacial epochs and other glacial epochs in the Qinghai - Xizang Plateau and some other areas. The glacial epochs are characterized by great mountain glaciers, ice caps, piedmont glaciers and medium- to small-scale valley glaciers. The existing glaciers had glacial advance in the Holocene and the glaciers have clear recession in the present period. |
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| Keywords: | Ayila Rigyu Mountains Quaternary glaciation early Pleistocene glacier glacial epoch division |
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