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作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2016, Vol. 38 ›› Issue (1): 100-106.doi: 10.7522/j.issn.1000-0240.2016.0011

• 冰冻圈与全球变化 • 上一篇    下一篇


伍云飞1,2, 赵井东1, 郑辉军1,2   

  1. 1. 中国科学院 寒区旱区环境与工程研究所 冰冻圈科学国家重点实验室, 甘肃 兰州 730000;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2015-11-12 修回日期:2016-01-13 出版日期:2016-02-25 发布日期:2016-05-30
  • 通讯作者: 赵井东,E-mail:jdzhao@lzb.ac.cn. E-mail:jdzhao@lzb.ac.cn
  • 作者简介:伍云飞(1990-),男,湖北房县人,2013年毕业于湖北师范学院,现为中国科学院寒区旱区环境与工程研究所在读硕士研究生,主要从事第四纪冰川与全球变化研究.E-mail:wuyf@lzb.ac.cn
  • 基金资助:

The formation and age of the Karakul Lake, eastern Pamir

WU Yunfei1,2, ZHAO Jingdong1, ZHENG Huijun1,2   

  1. 1. State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2015-11-12 Revised:2016-01-13 Online:2016-02-25 Published:2016-05-30

摘要: 喀拉库勒湖位于东帕米尔高原的康西瓦河流域.研究区的地质构造资料显示,断层活动形成的慕士塔格-公格尔山之间的断层谷是喀拉库勒湖形成的基础.对本区的地貌考察得知,源自慕士塔格峰东坡和公格尔山西坡的古冰流曾数次占据整个河源区,形成规模较大的山麓冰川.现存的喀拉库勒湖为一冰碛堰塞湖,其形成时间与最后一次古冰流填充河源区,阻塞慕士塔格峰西北侧自西南向东北汇入康西瓦河的阔克萨依克河水流的时间相一致.应用OSL测年技术对采自喀拉库勒湖外围冰碛丘陵中的砂质透镜体进行定年,获其年代范围为(26.8±1.3)~(41.7±4.4)ka.结合本区已有的ESR年代学资料(37.8±3.6)~(48.2±4.6)ka、邻近区域的古气候记录以及我国西部第四纪冰川演化序列综合分析可以得出,喀拉库勒湖主要形成于末次冰期中冰阶,时间上可对应于MIS3中期.

关键词: 冰碛堰塞湖, 冰碛丘陵, OSL测年, 东帕米尔高原

Abstract: The Karakul Lake is located in the upper reach of Kangxiwa River, eastern Pamir, China. Geologic structure data show that a large fault system has developed in the Muztag Ata and the Kongur Mountain areas, the depression formed by fault activities is the basis of the Karakul Lake. Investigations and observations in- situ indicate that glaciers had advanced dramatically from the eastern slope of Muztag Ata and the western slope of the Kongur Mountain, and the upper reach of the Kangxiwa River had occupied by glaciers for several times during Quaternary. According to the geomorphic and stratigraphic relationships, it is believed that the Karakul Lake is a moraine-dammed lake. The date of the hummocky moraines could be used to constrain the age of Karakul Lake. Field investigations demonstrate that an extensive piedmont glacier had developed and formed the hummocky moraines to block the Kuokesayike River. Optically stimulated luminescence (OSL) dating techniques were used to date the glaciofluvial deposits that collected from the man-made sections along the China-Pakistan Highway. The dating results range from (26.8±1.3) to (41.7±4.4) ka. Combining with previous published electron spin resonance (ESR) data (37.8±3.6)~(48.2±4.6) ka, the palaeo-climatic data in the vicinity areas and the Quaternary Glaciations pattern in Western China, it is concluded that the Karakul Lake was formed in the middle period of the last glacial cycle, corresponding to mid-MIS 3.

Key words: moraine-dammed lake, hummocky moraine, OSL dating, eastern Pamir


  • P343.6