哈纳斯湖的形成及湖周第四纪环境演变

Formation of Hanas Lake and the Environmental Change around the Lake in Quaternary

通过对哈纳斯湖成因及湖周第四纪环境变化的研究表明:晚更新世早期存在古哈纳斯湖;哈纳斯湖周在早更新世气侯较温暖、湿润,中更新世气候变冷,开始大面积发育冰川,晚更新世至全新世,冰川不断退缩,标志气侯不断变干。并提出了哈纳斯河流域冰期划分的新依据和划分方案。

The cause-formation of tectonic-glaciation of Hanas lake andthe change of the lake in late of Quaternary is discussed.The exi-stence of a larger ancient lake is demonstrated.The environmentalchange around the lake is proved as: the climate was warm and hu-mid in early Pleistocene, in middle Pleistocene,the climate becamecold, large area of glaciers began todevelon in the mountains,Afterthen, the glaciers retreated continuely, which means that the climatebecame dry gradually. The new proof of dividing of the glacial epo-ch and the new division of six glacial epoches in Hanas river basinis given.