新疆阿尔泰山哈纳斯河流域及其邻域第四纪冰川作用  

Quaternary Glaciations in the Halasi River Catchment and its Surroundings in the Altai Mountains in Xingjiang, China

作　　者：崔之久[1] 易朝路[1] 严竞浮 

机构地区：[1]北京大学城市与环境学系

出　　处：《冰川冻土》1992年第4期342-351,共10页Journal of Glaciology and Geocryology

摘　　要：根据新疆阿尔泰山哈纳斯河流域及其邻域第四纪冰川遗迹的类型和特征,哈纳斯河流域第四纪时期至少发生过5次明显的冰川事件,即倒数第三冰期,倒数第二冰期,倒数第一冰期(末次冰期),新冰期和小冰期。其中,更新世的3次冰川作用规模巨大,倒数第三冰期的冰川呈半覆盖式,倒数第二冰期和倒数第一冰期时发育了长达96km以上的大型山谷冰川。古冰川属于冰温高、活动性大和侵蚀能力强的温冰川。从新到老,每次冰期的雪线下降幅度一次比一次大。Based on the Quaternary glacial remains and their characteristics in the Halasi River catchment and its surroundings in the Altai Mountains in Xingjiang of China. It was found that there existed five ancient glaciated stages during Quaternary period. They are the third Glacial Stage, the second Glacial Stage and the Last Glacial Stage in pleistocene, and Neoglaciation and Little Ice Age in Hdocene. The three pleistocene glaciations had a massive scale with ice-capped glaciers. During the third Glacial Stage the main valley was fully occupied by the glaciers with the altitade range from 1 900 m to 2 200 m. The large valley glaciers with the length more than 96 km developed during the second and the Last Glacial Stage. The plaistocene glaciers belonged to temperate type with high ice temperature, the great activity and strong erosion. From the old ice stage to new one, the snowline rose higher and higher.

关 键 词：第四纪 冰川作用 哈纳斯河流 流域 

分 类 号：P512.4[天文地球—地质学]