岷江上游干旱河谷区汶川段风化壳剖面元素地球化学特征
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周雪妮, 曹亚廷, 计扬
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Element geochemical characteristics of weathering crust profiles of the Wenchuan section in the upper arid valley of the Minjiang River
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ZHOU Xue-Ni, CAO Ya-Ting, JI Yang
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表3 风化壳剖面中微量元素和重金属元素含量
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Table 3 Trace element content and heavy element content in weathering crust profiles 10-6
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剖面号 | 岩性 | 采样层位 | Se | Mn | Zn | Cu | As | Cd | Cr | Hg | Pb | PM01 | 闪长岩 | 腐殖层 | 0.20 | 893 | 81.9 | 34.9 | 17.70 | 0.18 | 79.0 | 0.02 | 30.1 | 淀积层 | 0.16 | 678 | 74.2 | 35.9 | 16.00 | 0.21 | 63.4 | 0.04 | 26.5 | 母质层 | 0.12 | 721 | 69.2 | 28.0 | 11.10 | 0.17 | 66.9 | 0.02 | 22.9 | 基岩层 | 0.09 | 162676.06 | 97.9 | 19.2 | 0.76 | 0.086 | 97.1 | <0.002 | 16.2 | PM02 | 花岗岩 | 腐殖层 | 0.14 | 988 | 112.0 | 90.4 | 4.26 | 0.26 | 56.2 | 0.02 | 25.3 | 淀积层 | 0.19 | 1269 | 176.0 | 77.5 | 3.82 | 0.49 | 54.2 | 0.063 | 40.1 | 母质层 | 0.17 | 418 | 91.9 | 23.1 | 5.00 | 0.61 | 33.8 | <0.005 | 19.4 | 基岩层 | 0.05 | 24014.08 | 35.5 | 4.16 | 0.33 | 0.079 | 15.5 | <0.002 | 18.40 | PM03 | 千枚岩 | 腐殖层 | 0.17 | 503 | 84.8 | 18.9 | 14.50 | 0.10 | 70.8 | 0.01 | 25.4 | 淀积层 | 0.17 | 632 | 70.5 | 28.5 | 15.00 | 0.19 | 61.6 | 0.02 | 24.9 | 母质层 | 0.12 | 466 | 75.8 | 14.2 | 12.50 | 0.08 | 61.2 | 0.02 | 22.2 | 基岩层 | 0.17 | 72042.25 | 97.2 | 17.6 | 13.60 | 0.033 | 122.0 | <0.002 | 54.00 | PM04 | 千枚岩 | 腐殖层 | 0.17 | 530 | 73.6 | 30.5 | 14.90 | 0.09 | 84.3 | 0.06 | 32.4 | 淀积层 | 0.14 | 700 | 79.4 | 37.1 | 17.50 | 0.13 | 90.1 | 0.06 | 33.6 | 母质层 | 0.14 | 433 | 66.8 | 28.0 | 12.40 | 0.10 | 64.8 | 0.03 | 27.9 | 基岩层 | 0.07 | 41056.34 | 129.0 | 42.1 | 4.08 | <0.02 | 96.8 | <0.002 | 20.6 | PM05 | 千枚岩 | 腐殖层 | 0.09 | 661 | 101.0 | 35.5 | 1.16 | 0.09 | 89.8 | <0.005 | 33.0 | 淀积层 | 0.10 | 671 | 102.0 | 43.7 | 1.16 | 0.08 | 81.8 | 0.01 | 32.5 | 母质层 | 0.12 | 584 | 86.9 | 31.4 | 1.76 | 0.09 | 69.4 | <0.005 | 28.0 | 基岩层 | 0.05 | 65070.42 | 139.0 | 30.9 | <0.02 | <0.02 | 124.0 | <0.002 | 24.50 | PM06 | 结晶灰岩 | 腐殖层 | 0.38 | 212 | 51.2 | 15.7 | 11.10 | 0.43 | 48.2 | 0.063 | 19.6 | 淀积层 | 0.17 | 151 | 102.0 | 30.7 | 9.99 | 0.66 | 72.5 | 0.091 | 18.9 | 母质层 | 0.20 | 148 | 32.4 | 5.79 | 6.68 | 0.54 | 20.5 | 0.023 | 10.4 | 基岩层 | 0.037 | 23239.4 | 16.4 | 1.57 | 0.74 | 0.021 | 9.98 | <0.002 | 3.46 | PM07 | 结晶灰岩 | 腐殖层 | 0.69 | 282 | 64.8 | 18.3 | 11.60 | 0.25 | 52.2 | 0.04 | 18.7 | 淀积层 | 0.73 | 276 | 56.7 | 16.1 | 10.70 | 0.26 | 45.8 | 0.04 | 17.2 | 母质层 | 0.31 | 237 | 40.1 | 9.6 | 3.99 | 0.23 | 29.8 | 0.019 | 10.9 | 基岩层 | 0.073 | 40281.70 | 19.4 | 2.74 | 1.74 | 0.039 | 16.4 | <0.002 | 8.24 | 全国土壤平均值[23] | 0.20 | 600 | 68 | 24 | 10 | 0.09 | 65 | 0.04 | 23 |
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