拉萨河谷爬坡沙丘沉积物特征
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王晓枝, 董治宝, 南维鸽, 李超, 高冲, 张欣
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Sediment characteristics of climbing dunes in Lhasa River Valley, China
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Xiaozhi Wang, Zhibao Dong, Weige Nan, Chao Li, Chong Gao, Xin Zhang
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表5 爬坡沙丘表层沉积物微量元素含量 (μg·g-1)
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Table 5 Trace elements composition of climbing dune surface deposition
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元素 | 变化范围 | 平均值 | 标准差 | 变异系数 | 背景值* |
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Ba | 321.8—581.5 | 404.6 | 59.1 | 0.15 | 550.0 | Sr | 135.7—440.0 | 264.5 | 101.6 | 0.38 | 350.0 | Cr | 16.9—288.8 | 125.0 | 95.8 | 0.77 | 35.0 | Zr | 62.8—175.4 | 118.7 | 29.4 | 0.25 | 190.0 | Rb | 35.7—141.7 | 93.4 | 38.9 | 0.42 | 112.0 | V | 33.8—78.3 | 57.6 | 16.2 | 0.28 | 60.0 | Co | 1.9—489.9 | 83.3 | 120.4 | 1.44 | 10.0 | Zn | 12.2—44.0 | 32.9 | 7.5 | 0.23 | 71.0 | La | 10.5—31.8 | 21.1 | 5.4 | 0.26 | 30.0 | Pb | 12.1—25.1 | 19.5 | 3.9 | 0.20 | 15.0 | Cu | 8.2—46.9 | 17.5 | 10.9 | 0.63 | 25.0 | Y | 11.6—19.5 | 14.8 | 2.3 | 0.15 | 22.0 | Ga | 11.4—16.2 | 13.5 | 1.1 | 0.08 | 17.0 | Ni | 2.5—15.5 | 9.3 | 3.3 | 0.36 | 20.0 | Nb | 2.5—10.2 | 6.5 | 2.2 | 0.35 | 25.0 | Bi | 5.8—5.8 | 5.8 | 0.0 | 0.00 | 127.0 | Hf | 2.0—4.7 | 3.41 | 0.7 | 0.22 | 5.8 | Mo | 0.0—7.7 | 3.0 | 2.9 | 0.95 | 1.5 |
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