青藏高原古里雅冰帽冰碛和冰水沉积物粒度特征及其意义

张延广,方小敏,毛子强,申茂华,张涛,昝金波,杨胜利

Grain-size characteristics of tills and glaciofluvial deposits in the Guliya ice cap， Tibetan Plateau and its implication

Yanguang ZHANG,Xiaomin FANG,Ziqiang MAO,Maohua SHEN,Tao ZHANG,Jinbo ZAN,Shengli YANG

表1 古里雅地区不同沉积物拟合组分峰值及含量

Table 1 Contents of fitting components of different sediments from the Guliya glacial region

拟合 冰碛物 冰水扇 河流 湖滩 湖心 拟合细粉砂峰 含量 31.7% 18.6% 22.0% 19.7% 41.2% 粒径 7.1 μm 8.3 μm 12.6 μm 11.3 μm 4.9 μm 拟合粗粉砂峰 含量 无峰，但4~5 Φ含量10.08% 3.5% 7.0% 2.2% 31.1% 粒径 45.7 μm 61.2 μm 54.8 μm 31.2 μm 拟合砂峰总含量 68.3% 77.9% 70.1% 78.1% 25.8%