Research Article
Grain-Size Control on the Rare Earth Elements Distribution in the Late Diagenesis of Cretaceous Shales from the Southern Apennines (Italy)
Table 2
Chemical composition (wt%) of the bulk sample and different fractions.
| Sample |
SiO2 | TiO2 | Al2O3 | Fe2O3 | MnO | MgO | CaO | Na2O | K2O | P2O5 | LOI |
| Bulk sample | | | | | | | | | | | | 2T | 54.38 | 0.86 | 20.26 | 8.01 | 0.03 | 2.89 | 0.51 | 0.86 | 2.48 | 0.30 | 9.17 | 4T | 54.87 | 1.06 | 19.39 | 7.43 | 0.07 | 1.89 | 1.63 | 0.90 | 2.68 | 0.16 | 9.71 | 6T | 41.35 | 0.60 | 13.05 | 6.11 | 0.21 | 2.30 | 15.90 | 1.20 | 1.67 | 0.29 | 17.12 | 7T | 56.14 | 0.78 | 18.79 | 7.38 | 0.03 | 2.63 | 0.94 | 1.06 | 4.27 | 0.14 | 7.61 | 8T | 58.54 | 0.93 | 19.90 | 7.53 | 0.02 | 2.11 | 0.24 | 1.06 | 2.03 | 0.17 | 7.28 | 9T | 52.54 | 1.20 | 21.23 | 7.78 | 0.07 | 1.59 | 2.47 | 1.24 | 1.51 | 0.16 | 9.99 |
| Fractions | | | | | | | | | | | | <0.1 m | | | | | | | | | | | | 2A | 46.65 | 0.04 | 23.46 | 4.75 | 0.00 | 2.69 | 0.46 | 4.26 | 3.74 | 0.62 | 13.06 | 4A | 41.08 | 0.07 | 20.63 | 4.01 | 0.00 | 1.95 | 1.82 | 7.60 | 4.55 | 0.05 | 18.00 | 6A | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | 7A | 41.51 | 0.05 | 19.42 | 5.02 | 0.00 | 2.16 | 0.57 | 7.24 | 5.20 | 0.05 | 17.70 | 8A | 45.92 | 0.04 | 25.65 | 4.96 | 0.00 | 2.62 | 0.32 | 2.84 | 4.05 | 0.35 | 13.05 | 9A | 37.72 | 0.04 | 22.65 | 1.62 | 0.00 | 1.24 | 1.47 | 11.37 | 3.01 | 0.05 | 19.68 | (0.1–2) m | | | | | | | | | | | | 2B | 48.69 | 1.10 | 24.87 | 7.06 | 0.02 | 2.90 | 0.66 | 0.64 | 3.37 | 0.37 | 10.04 | 4B | 52.59 | 1.34 | 22.83 | 5.67 | 0.03 | 1.74 | 0.95 | 0.43 | 4.08 | 0.16 | 9.94 | 6B | 43.50 | 0.95 | 20.77 | 7.87 | 0.08 | 2.85 | 6.98 | 0.44 | 3.39 | 0.42 | 12.52 | 7B | 50.71 | 0.84 | 23.18 | 7.21 | 0.00 | 2.86 | 0.47 | 0.41 | 5.72 | 0.16 | 8.18 | 8B | 47.65 | 1.27 | 24.57 | 10.47 | 0.02 | 2.91 | 0.29 | 0.65 | 3.18 | 0.19 | 8.56 | 9B | 47.40 | 1.61 | 26.87 | 7.39 | 0.02 | 1.64 | 0.58 | 0.94 | 2.45 | 0.17 | 10.66 | (2–32) m | | | | | | | | | | | | 2C | 58.85 | 0.77 | 17.92 | 8.88 | 0.03 | 2.89 | 0.39 | 0.66 | 1.96 | 0.20 | 7.21 | 4C | 56.75 | 0.96 | 17.68 | 9.45 | 0.09 | 2.04 | 1.63 | 0.82 | 1.85 | 0.13 | 8.43 | 6C | 46.92 | 0.60 | 12.63 | 6.48 | 0.18 | 2.44 | 12.90 | 1.42 | 1.34 | 0.27 | 14.63 | 7C | 63.53 | 0.82 | 15.13 | 7.94 | 0.02 | 2.43 | 0.35 | 1.15 | 2.71 | 0.11 | 5.61 | 8C | 65.66 | 0.82 | 17.10 | 6.15 | 0.00 | 1.59 | 0.16 | 1.10 | 1.25 | 0.10 | 5.88 | 9C | 58.62 | 1.10 | 18.64 | 8.54 | 0.07 | 1.58 | 1.11 | 0.87 | 0.90 | 0.14 | 8.26 | (32–63) m | | | | | | | | | | | | 2D | 50.62 | 0.64 | 19.64 | 13.08 | 0.05 | 3.84 | 0.52 | 0.50 | 1.87 | 0.24 | 8.72 | 4D | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | 6D | 33.04 | 0.17 | 5.92 | 4.22 | 0.24 | 1.43 | 28.64 | 0.84 | 0.44 | 0.11 | 24.80 | 7D | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | 8D | 62.23 | 0.65 | 16.32 | 9.06 | 0.03 | 2.32 | 0.43 | 1.04 | 1.39 | 0.14 | 6.21 | 9D | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | >63 m | | | | | | | | | | | | 2E | 46.02 | 0.53 | 19.54 | 16.38 | 0.23 | 4.57 | 1.00 | 0.37 | 1.60 | 0.21 | 9.33 | 4E | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | n.a. | 6E | 20.06 | 0.19 | 4.88 | 3.43 | 0.36 | 1.16 | 37.46 | 0.39 | 0.55 | 0.14 | 31.16 | 7E | 50.38 | 0.43 | 10.64 | 8.57 | 0.37 | 2.77 | 11.43 | 0.71 | 1.30 | 0.12 | 13.04 | 8E | 53.52 | 0.54 | 17.45 | 13.47 | 0.17 | 3.24 | 1.60 | 0.56 | 1.23 | 0.15 | 7.87 | 9E | 28.52 | 0.42 | 9.43 | 10.91 | 0.42 | 1.04 | 23.85 | 0.33 | 0.54 | 0.11 | 22.97 |
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