| 念青唐古拉山中段第四纪冰期划分 |
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| 关键词:Tibet Nyainqentanglha Range Quaternary glacial epoch division |
| 基金项目:国土资源大调查项目“西藏纳木错地区第四纪环境演变调查研究”(编号:DKD2001006)，“西藏当雄幅1∶25万区域地质调查”(编号:DKD9901001) |
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| The Division of Quaternary Glacial Epochs of Middle Nyainqentanglha Range |
| The Nyainqentanglha Range moves in the NE (nearly EW) direction, and its main ridge is 6 000～7 000 m in elevation. Glacier activity was strong in Quaternary. According to Quaternary stratigraphic section, stratigraphic sequence, general geological configuration of the earth's surface and contact relationships, Three glacial epochs can be distinctly recognized in the middle part of the Nyainqentanglha Range, which are from old to young the Laqu glacial epoch Q 3,the Paranr glacial epoch Q 2～3 , and the Ningzhong glacial epoch Q 2～1 . The gravels in deposits of different glacial epochs and interglacial stages show obviously different rock characteristics, gravel forms, deposit thicknesses and weathering degrees. Discussions have also been made on such comparisons as the comparison of old glacial epoch with moraine layer, that of various interglacial stages and that of the glacial epochs in this area with those in other districts. |
| ZHU Da-gang,ZHAO Xi-tao,MENG Xian-gang,WU Zhong-hai,SHAO Zhao-gang,FENG Xiang-gang,LIU Qi-sheng.2002.The Division of Quaternary Glacial Epochs of Middle Nyainqentanglha Range[J].Acta Geoscientica Sinica,23(4):335-342. |
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