西藏中部当惹雍错湖泊阶地记录的中晚全新世古气候变化

刘玉青, 林晓, 王君波, 汪勇, 隗如义, 寇强强

Paleoclimate changes reflected by lake terrace in Tangra Yumco of Central Tibet since middle-late Holocene

Yuqing LIU, Xiao LIN, Junbo WANG, Yong WANG, Ruyi WEI, Qiangqiang KOU

表1 当惹雍错T1剖面沉积物光释光测年结果

Tab. 1 OSL dating results of the T1 terrace in the northwestern part of Tangra Yumco

样品号 深度(cm) U(ppm) Th(ppm) K(%) 等效剂量(Gy) 含水量(%) 环境计量率(Gy/ka) 样品年龄(ka) DRY-10 15 17.1±0.38 13.8±0.37 1.45±0.05 11.06±0.10 10 6.45±0.42 1.71±0.11 DRY-08 100 10.1±0.24 13.6±0.37 1.79±0.06 15.71±1.39 10 5.29±0.34 2.97±0.33 DRY-09 251 13.0±0.31 18.4±0.48 2.15±0.06 38.94±5.24 10 6.44±0.43 6.05±0.91