Table 13.
Geochemical parameters of samples from Section IV (CaO* = recalculated CaO free of CaO in Carbonates).
| Sample | ET-160* | ET-161 | ET-164 | ET-167* | ET-168 | ET-174* | ET-176 | ET-178 |
|---|---|---|---|---|---|---|---|---|
| SiO2 | 75.23 | 75.46 | 73.09 | 45.08 | 50.01 | 73.36 | 15.82 | 70.72 |
| TiO2 | 0.37 | 0.48 | 0.57 | 0.27 | 0.22 | 0.36 | 0.11 | 0.55 |
| Al2O3 | 12.74 | 12.82 | 12.96 | 8.38 | 5.81 | 13.67 | 3.81 | 11.72 |
| Fe2O3 | 0.63 | 1.03 | 3.66 | 1.8 | 2.31 | 1.65 | 1.99 | 5.1 |
| MnO | n.d. | 0.02 | 0.06 | 0.46 | 0.61 | 0.02 | 0.61 | 0.06 |
| MgO | 0.23 | 0.34 | 1.14 | 0.6 | 2.71 | 0.8 | 0.35 | 2.61 |
| CaO | 0.15 | 0.16 | 0.82 | 21.06 | 21.02 | 0.85 | 49.88 | 1.11 |
| CaO* | n.d. | n.d. | n.d. | 18.94 | 17.74 | 0.08 | 41.59 | 0.39 |
| Na2O | 0.28 | 0.35 | 1.43 | 2.68 | 0.37 | 3.88 | n.d. | 0.68 |
| K2O | 8.34 | 8.04 | 3.9 | 0.94 | 0.64 | 2.06 | 1.1 | 3.01 |
| P2O5 | 0.02 | 0.08 | 0.15 | 0.1 | 0.03 | 0.04 | n.d. | 0.15 |
| LOI | 1.8 | 1.22 | 2.23 | 18.5 | 18.68 | 3.1 | 34.47 | 4.24 |
| CO2 | n.d. | n.d. | n.d. | 15.45 | 16.42 | 0.15 | 32.96 | 1.3 |
| CaCO3* | n.d. | n.d. | n.d. | 33.8 | 31.66 | 0.14 | 74.23 | 0.7 |
| Cr | n.d. | 22 | 16 | 13 | 12 | 20 | 12 | 38 |
| Ni | 1 | 11 | 0 | 7 | 8 | 10 | 14 | 13 |
| Co | 0 | 6 | 10 | 4 | 40 | 2 | 14 | 13 |
| Sc | 5 | 5 | 11 | 5 | 13 | 5 | 9 | 9 |
| V | 36 | 54 | 70 | 47 | 48 | 42 | 58 | 55 |
| Pb | 4 | 35 | 38 | 10 | 19 | 18 | 37 | 45 |
| Zn | 3 | 42 | 61 | 15 | 27 | 26 | 31 | 59 |
| Rb | 316 | 339 | 168 | 45 | 55 | 78 | 92 | 185 |
| Ba | 1473 | 1682 | 851 | 387 | 287 | 335 | 559 | 312 |
| Sr | 95 | 80 | 147 | 308 | 449 | 371 | 843 | 71 |
| Ga | 11 | 14 | 20 | 6 | 12 | 12 | 10 | 22 |
| Ta | 0.6 | 1.69 | 0.87 | 0.3 | 0.97 | 0.8 | 0.4 | 1.63 |
| Nb | 12.3 | 11.4 | 12.4 | 4.6 | 8.7 | 9.1 | 5.8 | 26.4 |
| Hf | 3.7 | 3.94 | 12.25 | 2.5 | 8.75 | 8.5 | 4.88 | 13.05 |
| Zr | 128 | 158 | 192 | 100 | 162 | 322 | 209 | 186 |
| Y | 19 | 30 | 25 | 31 | 56 | 18 | 93 | 39 |
| Th | 12.8 | 12.85 | 13.25 | 5.4 | 7.47 | 15.5 | 6.96 | 25.7 |
| U | 3.4 | 4.42 | 2.91 | 1.3 | 1.97 | 2.1 | 1.23 | 3.74 |
| La | 36.9 | n.d. | 31.9 | 31.5 | 52.46 | 48.9 | 51.73 | n.d. |
| Ce | 61.3 | n.d. | 66.18 | 46.9 | 78.59 | 88.9 | 129.2 | n.d. |
| Pr | 6.36 | n.d. | 9.25 | 6.89 | n.d. | 9.56 | 16.91 | n.d. |
| Nd | 21 | n.d. | 36.75 | 27.9 | 37.22 | 33.5 | 64.66 | n.d. |
| Sm | 3.63 | n.d. | 8.21 | 6.14 | 10.65 | 5.51 | 12.25 | n.d. |
| Eu | 0.61 | n.d. | 1.84 | 1.33 | 1.4 | 0.89 | 3.17 | n.d. |
| Gd | 3.31 | n.d. | 8.58 | 5.72 | 10.3 | 4.71 | 9.99 | n.d. |
| Tb | 0.48 | n.d. | 1.31 | 0.86 | 1.13 | 0.61 | 1.31 | n.d. |
| Dy | 2.89 | n.d. | 6.86 | 4.54 | 7.01 | 3.19 | 6.06 | n.d. |
| Ho | 0.67 | n.d. | n.d. | 0.91 | n.d. | 0.63 | n.d. | n.d. |
| Er | 1.88 | n.d. | 3.72 | 2.32 | 1.14 | 1.7 | 2.3 | n.d. |
| Tm | 0.34 | n.d. | n.d. | 0.33 | n.d. | 0.28 | n.d. | n.d. |
| Yb | 2.25 | n.d. | 3.81 | 2.2 | 3.03 | 1.9 | 2.42 | n.d. |
| Lu | 0.37 | n.d. | 0.48 | 0.31 | 0.35 | 0.3 | 0.32 | n.d. |
| Chem.Lit | Psam. | Psam. | Psam. | CaO++ | CaO++ | Psam. | CaO++ | Psam. |
| Zr/Ti | 346.48 | 329.16 | 336.84 | 372.59 | 736.36 | 895.27 | 1900 | 338.18 |
| Nb/Y | 0.64 | 0.38 | 0.49 | 0.14 | 0.15 | 0.48 | 0.06 | 0.67 |
| Th/Sc | 2.56 | 2.57 | 1.2 | 1.08 | 0.57 | 3.1 | 0.77 | 2.85 |
| Ti/Nb | 180 | 252 | 276 | 352 | 152 | 237 | 114 | 125 |
| CIA | 56.7 | 57.7 | 62.6 | 48 | 44.7 | 57.9 | 19 | 68.6 |
| PIA | 84.2 | 85.4 | 71.3 | 47.8 | 44 | 59.8 | 14.8 | 80.1 |
| CIW | 94.8 | 94.8 | 78.7 | 51 | 47.2 | 64 | 20.2 | 84.8 |
| Eu/Eu* | 0.54 | n.d. | 0.67 | 0.69 | 0.41 | 0.53 | 0.88 | n.d. |
| REE | 11.08 | n.d. | 5.66 | 9.68 | 11.7 | 17.39 | 14.44 | n.d. |
| LREE | 6.4 | n.d. | 2.45 | 3.23 | 3.1 | 5.59 | 2.66 | n.d. |
| HREE | 1.19 | n.d. | 1.83 | 2.11 | 2.76 | 2.01 | 3.35 | n.d. |
| Σ REE | 141.99 | n.d. | 178.89 | 137.85 | 203.28 | 200.58 | 300.32 | n.d. |
Note: Oxides and LOI in %, other elements in ppm. X is mean value for each group of sandstones; SD is standard derivation for that mean. Abbreviations: n.d.: not detected; CaCO* = maximum CaO in Carbonates recalculated from CO2; Chem.Lit: Chemical lithology [7] (s. Fig. 7); CaO++: CaO enriched samples; Psam.: Psammite classified samples; Rest++: enriched in SiO2 and Al2O3; Rest--: impoverished in SiO2 and Al2O3;. Eu/Eu* = EuN/(SmNxGdN)0.5 Samples are not LOI-free recalculated.