Cores 11 through 26 by Gary B. Dr - University of Illinois at Urbana ...
Cores 11 through 26 by Gary B. Dr - University of Illinois at Urbana ...
Cores 11 through 26 by Gary B. Dr - University of Illinois at Urbana ...
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Table 31. Elemental composition <strong>of</strong> samples selected from Core 21Subsample 21-01 21-02 21-03 21-04 21-07 21-10 AverageLab. No. R22031 R22032 R22033 R22034 R22035 R22036Depth Interval (ft) 0.0-0.4 0.4-1.15 1.15-2.0 2.0-2.8 4.6-5.8 6.5-7.4Horizon A A E B B BSiO 2(%) 77.17 79.84 80.83 70.86 76.44 75.36 76.75Al 2O 3(%) 8.71 8.78 8.51 14.46 <strong>11</strong>.88 12.36 10.78Fe 2O 3(%) 2.71 2.74 2.93 4.72 2.83 3.62 3.<strong>26</strong>K 2O (%) 1.56 1.57 1.63 1.55 1.87 1.66 1.64CaO (%) 0.58 0.43 0.29 0.31 0.49 0.47 0.43MgO (%) 0.40 0.37 0.33 0.73 0.65 0.60 0.51Na 2O (%) 0.90 0.89 0.92 0.76 1.05 0.80 0.89TiO 2(%) 0.83 0.86 0.90 0.85 0.85 0.90 0.86P 2O 5(%) 0.15 0.07 0.08 0.08 0.08 0.09 0.09MnO 2(%) 0.04 0.03 0.04 0.02 0.02 0.04 0.03SO 3(%) 0.01 0.01 0.01 0.01 0.01 0.01 0.01Barium 471 500 467 418 582 558 500Chromium 29 22 29 100 52 58 48Copper 27 23 23 32 30 29 27Mercury (µg/kg) 37 28 23 48 23 29 31Nickel 8 6
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