唐古拉山东段布加岗日南坡小冰期冰进的10Be暴露测年研究

赵井东, 邱锦坤, 季卉晗, 郭万钦, 刘瑞连, 麻浩男

10Be surface exposure dating of Little Ice Age glacial events on the southern slope of Bujia Gangri， eastern Tanggula Mountains

Jingdong ZHAO, Jinkun QIU, Huihan JI, Wanqin GUO, Ruilian LIU, Haonan MA

表1 唐古拉山东段布加岗日南坡拥曲河源区10Be测年样品采集信息

Table 1 10Be dating sample collection information at the headwater of the Yongqu River valley on the southern slope of Bujia Gangri， eastern Tanggula Mountains

冰碛垄 样品编号 岩性 纬度/N 经度/E 海拔/m a.s.l. 漂砾尺寸（长/宽/高）/cm 采样厚度/cm 地形遮蔽度 MW1 BJ-01 花岗岩 31.75621° 94.63611° 4 204 240/180/140 2.3 0.96557 BJ-02 花岗岩 31.75515° 94.63706° 4 204 170/60/80 2.0 0.97003 BJ-03 花岗岩 31.75424° 94.63613° 4 201 120/70/110 3.0 0.96691 BJ-04 花岗岩 31.75340° 94.63527° 4 202 170/160/70 2.0 0.96214 ME1 BJ-05 花岗岩 31.73096° 94.72024° 4 363 600/350/300 2.0 0.98029 BJ-06 花岗岩 31.73091° 94.71983° 4 360 310/180/150 2.5 0.97984 BJ-07 花岗岩 31.73088° 94.71947° 4 356 140/125/95 2.5 0.97963