祁连山冷龙岭南麓的冰川序列、黄土记录和阶地系列的初步研究

已经发现的冰川沉积和黄土记录证明冷龙岭至少经历了３次冰期的冰川作用，其中倒数第３次冰期与沉积黄土Ｌ４（或Ｌ５）的时期相当，其时冰川规模最大，随后各个冰期冰川规模逐渐变小．即使在倒数第三次冰期，冰川末端也只到达冷龙岭南侧门源盆地的边缘，未能覆盖整个盆地形成冰盖；门源盆地南侧发育的５级大通河阶地与分布于盆地中的５级冰水（扇）阶地以及盆地北侧的５套冰碛可以进行对比，它们记录了自倒数第三次冰期以来门源盆地的冰川作用，河流发育与地貌演化。

A Preliminary Study on the Sequences of Glaciers, Loess Records and Terraces of the Southern Foothills of Lenlong Ling in Qilian Mountains

The discovered glacial deposits and loess records prove that there were at least 3glaciations in Lenglong Ling. The third-from-the-last galciation which was the largest one can be correlated to L4 (or L5) in loess profile. The extent of glaciation decreased gradually thereafter. Even in the third-from-the-last glaciation, the ends of glaciers only reached the edge or the basin, without the formation of large ice sheets. The 5 river terraces in the south of the basin can be compared with the 5 glacial-fluvial terraces (fans) in the basin. They were the records of glaciation, river development, geomorphological evolution in the Basin from the third-from-the-last glaciation.