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| 中国西部MIS12冰期研究 | |
| 引用本文： | 周尚哲,易朝路,施雅风,业渝光.中国西部MIS12冰期研究[J].地质力学学报,2001,7(4):321-327. |
| 作者姓名： | 周尚哲 易朝路 施雅风 业渝光 |
| 作者单位： | 1. 兰州大学地理科学系, 2. 中国科学院武汉测量与地球物理所, 3. 中国科学院寒区和旱区环境与工程所, 4. 地质矿产部青岛海洋地质研究所, |
| 基金项目： | 国家自然科学基金，中国科学院试验站基金，49731010，9905,9901，， |
| 摘 要： | 祁连山摆浪河上游和天山乌鲁木齐河源是现代冰川和第四纪冰川活动的地方。我们运用ESR技术对第四纪冰碛进行测年研究,浪河河上游最老的中梁赣冰碛为462.9kaBP;乌鲁木齐河源最才绵上槽谷高望峰冰碛为477.1kaBP和459.7kaBP，从而确认了中国西部山地冰川对全球化深海氧同位素12阶段（MIS12）冰期的响应。 |
| 关 键 词： | 中国西部 MIS12冰期 第四纪 冰川 氧同位素 电子自旋共振 冰碛 ESR技术 |
| 文章编号： | 1006-6616(2001)04-0321-07 |
| 收稿时间： | 2001/9/4 0:00:00 |
| 修稿时间： | 2001年9月4日 |
STUDY ON THE ICE AGE MIS12 IN WESTERN CHINA |
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| ZHOU Shang-zhe,YI Chao-lu,SHI Ya-feng and YE Yu-guang.STUDY ON THE ICE AGE MIS12 IN WESTERN CHINA[J].Journal of Geomechanics,2001,7(4):321-327. | |
| Authors: | ZHOU Shang-zhe YI Chao-lu SHI Ya-feng and YE Yu-guang |
| Institution: | Department of Geography, Lanzhou Univesity, Lanzhou 730000, China,Department of Environmental Sciene, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China,Lanzhou Institute of Cold & Arid Area and Environment and Engineering, Chinese Academy of Sciences, Lanzhou 730000 China and Qingdao Institute of Marine Geology, Ministry of Geology and Mineral Resources, Qingdao 266071, China |
| Abstract: | The dating is a very key problem in the study of Quaternary glaciation. Recent years, many technologies,for example,OSL (optically simulated luminescence),AMS (accelerating mass spectrometry), ESR (electron spin resonance) and so on, were used to date glacial deposits. Qilian Shan mounatains is the northeastern marginal mountains of the Qinghai-Tibetan Plateau and Tian Shan mountains is the big mountains in the center of Asia. The two mountains lie in the temperate arid region of Asia. However, because of appropriate precipitation in high attitude, there are a lot of contemporary glaciers in the two mountains. The glacial deposits and geomorphologies indicate that those glaciers occurred early and advanced for several times during Quaternary period. ESR technology was undertaken to define the timing of the glaciations and associated sediment deposition of the two mountains. The oldest moraine on the top of Zhonglianggan (2997m asl and 500m above the contemporary river level) in Bailang River Basin of Qilian Shan mountains was dated 462.9 ka BP. The oldest high Wafeng till (3450m asl and 250m above contemporary river level) of Urumqi River Basin, Tian Shan, was dated 477.1ka BP and 459.7ka BP.These datings show that the glaciers of the two mountains extended during marine isotopic stage 12(MIS12) and implicate a response of the uplifted mountains to the global climatic deterioration. |
| Keywords: | Western China glaciation of MIS12 |
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