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《Journal of Glaciology and Geocryology》 1984-02
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A Preliminary Obseryation on Neoglaciation in Qilian Mountains

Wu Guanghe (Department of Geology and Geography, Lanzhou University)  
A group of glacial deposit distributed widely in Qilian Mountain region has been researched and discussed in this paper. These moraines have kept their complete form, but were weathered strongly. The upper part of the moraines is covered by the recent till, while the lower part has inlaid on the base rock of the floor of the U-shaped valley, and came into and across the main U-shaped valley from branch valleys. Based on these facts,the author points out that this glaciation occurred after Wurm period, i. e. after a strong process of uplifting movement in neotectonic, after a strong exogenetic process of cutting,after a strong climatic change in hypsithermal interval, and after a long little interglacial stage lasted several thousand years in glacial history. Therefore,it should be an independent glaciation. The author is of the opinion that it would belong to a neoglaciation,which is proved by C14 chronology. This paper also points out that this neoglaciation spreads widely throughout all Qilian Mountains. The properties of the glaciation are similar to the modern glaciers,but with a length 1-4 km longer and a snowline 200 m lower than modern glaciers.Most glaciers in neoglaciation are not remains of the Later-Pleistocene and most of the existing glaciers are neither neoglacial remains. They take form in the recent 300-400 years.
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