Table 14.
Geochemical parameters of samples from Section V (CaO* = recalculated CaO free of CaO in Carbonates).
| Sample | ET-180* | ET-181 | ET-185* |
|---|---|---|---|
| SiO2 | 74.69 | 76.5 | 71.01 |
| TiO2 | 0.28 | 0.3 | 0.3 |
| Al2O3 | 13.35 | 11.1 | 13.26 |
| Fe2O3 | 1.78 | 2.47 | 1.64 |
| MnO | 0.01 | 0.02 | 0.05 |
| MgO | 0.25 | 0.34 | 0.53 |
| CaO | 0.18 | 0.23 | 1.86 |
| CaO* | 0.01 | n.d. | 1.06 |
| Na2O | 4.88 | 1.63 | 1.55 |
| K2O | 3.01 | 5.83 | 5.08 |
| P2O5 | 0.05 | 0.16 | 0.06 |
| LOI | 1.4 | 1.38 | 4.5 |
| CO2 | 0.02 | n.d. | 1.16 |
| CaCO3* | 0.02 | n.d. | 1.89 |
| Cr | 20 | 14 | 0 |
| Ni | 6 | 9 | 7 |
| Co | 8 | 11 | 2 |
| Sc | 4 | 4 | 4 |
| V | 35 | 105 | 27 |
| Pb | 12 | 123 | 21 |
| Zn | 30 | 13 | 26 |
| Rb | 88 | 230 | 153 |
| Ba | 775 | 1401 | 1113 |
| Sr | 200 | 104 | 153 |
| Ga | 12 | 11 | 14 |
| Ta | 0.4 | 2.33 | 1 |
| Nb | 8.5 | 15.2 | 12.8 |
| Hf | 4 | 5.47 | 5.1 |
| Zr | 141 | 200 | 197 |
| Y | 16 | 22 | 21 |
| Th | 9 | 15.25 | 13.6 |
| U | 2.3 | 4.95 | 2.3 |
| La | 30.2 | n.d. | 48.2 |
| Ce | 58.9 | n.d. | 89.8 |
| Pr | 6.48 | n.d. | 9.92 |
| Nd | 24.4 | n.d. | 35.1 |
| Sm | 4.27 | n.d. | 5.33 |
| Eu | 0.77 | n.d. | 0.97 |
| Gd | 3.56 | n.d. | 4.95 |
| Tb | 0.51 | n.d. | 0.65 |
| Dy | 3.28 | n.d. | 3.72 |
| Ho | 0.65 | n.d. | 0.72 |
| Er | 1.83 | n.d. | 2.03 |
| Tm | 0.26 | n.d. | 0.35 |
| Yb | 1.8 | n.d. | 2.31 |
| Lu | 0.28 | n.d. | 0.35 |
| Chem.Lit | Psam. | Psam. | Psam. |
| Zr/Ti | 506.78 | 666.66 | 659.33 |
| Nb/Y | 0.52 | 0.69 | 0.58 |
| Th/Sc | 2.25 | 3.81 | 3.4 |
| Ti/Nb | 197 | 118 | 141 |
| CIA | 53.8 | 55 | 58.6 |
| PIA | 55.1 | 63.5 | 66.7 |
| CIW | 61.9 | 80.1 | 77.4 |
| Eu/Eu* | 0.6 | n.d. | 0.58 |
| REE | 11.34 | n.d. | 14.1 |
| LREE | 4.45 | n.d. | 5.69 |
| HREE | 1.6 | n.d. | 1.74 |
| Σ REE | 137.19 | n.d. | 204.4 |
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.