拉萨河谷爬坡沙丘沉积物特征
王晓枝, 董治宝, 南维鸽, 李超, 高冲, 张欣

Sediment characteristics of climbing dunes in Lhasa River Valley， China
Xiaozhi Wang, Zhibao Dong, Weige Nan, Chao Li, Chong Gao, Xin Zhang
表2 爬坡沙丘沉积物不同深度粒级级配
Table 2 The sediment grain size composition of climbing dune at different depths
采样点粒度分级/%

黏土

<0.004 mm

粉沙

0.004—0.063 mm

极细沙

0.063—0.125 mm

细沙

0.125—0.25 mm

中沙

0.25—0.5 mm

粗沙

>0.5 mm

表层0.188.9919.7346.3423.780.98
4—10 cm1.1813.3920.6342.5821.880.33
10—40 cm0.7512.8921.0943.7621.260.28
40—60 cm1.0314.8321.6642.0620.070.36