Table 15.
Geochemical parameters of samples from El Tranquilo igneous rocks (CaO* = recalculated CaO free of CaO in Carbonates).
| Sample | ET-38 | ET-41 | ET-42 | ET-43* | ET-60 | ET-64 | ET-67 | ET-91* | ET-99 | ET-109 | ET-113* | ET-134* | ET-135* | ET-140 | ET-141* | ET-151 | ET-175* |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SiO2 | 80.92 | 51.8 | 57.11 | 52.19 | 50.48 | 69.74 | 72.82 | 69.22 | 73.91 | 51.01 | 52.75 | 50.12 | 48.21 | 52.72 | 45.79 | 74.89 | 15.99 |
| TiO2 | 0.25 | 1.25 | 1.89 | 1.46 | 1.45 | 0.56 | 0.58 | 0.34 | 0.48 | 1.01 | 0.75 | 0.7 | 0.79 | 0.76 | 0.79 | 0.34 | 0.27 |
| Al2O3 | 12.1 | 16.21 | 13.38 | 16.9 | 16.5 | 14.45 | 13.4 | 14.14 | 12.81 | 16.08 | 15.15 | 14.56 | 16.06 | 14.87 | 16.15 | 10.95 | 9.61 |
| Fe2O3 | 0.62 | 9.82 | 10.27 | 9.97 | 9.58 | 2.58 | 3.73 | 2.52 | 4.66 | 8.53 | 9.99 | 9.66 | 9.16 | 9.79 | 9.23 | 1.81 | 67.38 |
| MnO | 0.01 | 0.14 | 0.17 | 0.14 | 0.23 | 0.03 | 0.04 | 0.05 | 0.02 | 0.14 | 0.18 | 0.17 | 0.14 | 0.15 | 0.14 | 0.06 | 0.48 |
| MgO | 0.34 | 5.47 | 2.77 | 3.74 | 4.19 | 0.59 | 0.91 | 1.03 | 1.68 | 5.95 | 5.41 | 5.13 | 3.24 | 4.29 | 3.44 | 0.82 | 0.06 |
| CaO | 0.02 | 8.98 | 5.25 | 8.24 | 8.76 | 1.13 | 0.55 | 2.36 | 0.37 | 3.97 | 9.16 | 9.65 | 7.27 | 9.07 | 8.4 | 3.07 | 0.34 |
| CaO* | n.d. | n.d. | n.d. | 0.05 | 1.46 | 0.15 | n.d. | 1.15 | 0.02 | 1.78 | 1.18 | 2.97 | 4.66 | 2.7 | 5.13 | 0.96 | 0.02 |
| Na2O | n.d. | 2.56 | 3 | 3.19 | 2.09 | 3.84 | 2.05 | 2.59 | 1.17 | 3.51 | 1.66 | 1.2 | 2.65 | 0.9 | 2.36 | 2.21 | 0.11 |
| K2O | 2.77 | 1.77 | 2.91 | 1.77 | 1.53 | 3.81 | 3.4 | 2.25 | 1.76 | 2.69 | 1.43 | 1.23 | 1.96 | 1.33 | 2 | 1.89 | 0.52 |
| P2O5 | 0.05 | 0.42 | 1.03 | 0.39 | 0.52 | 0.12 | 0.15 | 0.06 | 0.11 | 0.38 | 0.1 | 0.08 | 0.11 | 0.1 | 0.11 | 0.1 | 0.15 |
| LOI | 3 | 1.59 | 2.25 | 1.7 | 4.82 | 3.2 | 2.4 | 5.3 | 3.12 | 7.12 | 3.1 | 7.2 | 10.2 | 6.35 | 11.3 | 3.98 | 4.8 |
| CO2 | n.d. | n.d. | n.d. | 0.06 | 1.91 | 0.21 | n.d. | 1.45 | 0.13 | 4.32 | 1.69 | 4.05 | 5.92 | 3.51 | 6.32 | 1.03 | 0.02 |
| CaCO3* | n.d. | n.d. | n.d. | 0.09 | 2.61 | 0.27 | n.d. | 2.05 | 0.04 | 3.18 | 2.11 | 5.3 | 8.32 | 4.82 | 9.16 | 1.71 | 0.04 |
| Cr | 11 | 121 | 5 | 34 | 141 | 16 | 30 | 13 | 19 | 161 | 136 | 136 | 136 | 153 | 143 | 19 | 27 |
| Ni | 6 | 56 | 0 | 27 | 73 | 0 | 14 | 7 | 13 | 50 | 18 | 55 | 66 | 74 | 67 | 11 | 28 |
| Co | 9 | 42 | 35 | 23 | 45 | 16 | 18 | 5 | 19 | 32 | 38 | 35 | 36 | 50 | 41 | 19 | 24 |
| Sc | 10 | 30 | 26 | 29 | 28 | 10 | 9 | 7 | 11 | 23 | 36 | 34 | 38 | 43 | 38 | 7 | 25 |
| V | 24 | 220 | 198 | 312 | 250 | 67 | 91 | 43 | 67 | 179 | 198 | 192 | 210 | 225 | 207 | 46 | 786 |
| Pb | 37 | 10 | 55 | 6 | 47 | 68 | 56 | 20 | 26 | 42 | 4 | 7 | 8 | 8 | 9 | 32 | 76 |
| Zn | 13 | 85 | 122 | 45 | 98 | 59 | 50 | 45 | 49 | 58 | 47 | 58 | 80 | 76 | 81 | 55 | 55 |
| Rb | 154 | 43 | 67 | 44 | 34 | 100 | 128 | 100 | 75 | 90 | 42 | 41 | 68 | 46 | 73 | 84 | 24 |
| Ba | 246 | 683 | 982 | 664 | 658 | 671 | 1564 | 757 | 872 | 1105 | 753 | 1010 | 325 | 1290 | 282 | 407 | 218 |
| Sr | 41 | 572 | 424 | 606 | 573 | 247 | 411 | 209 | 188 | 451 | 175 | 269 | 318 | 264 | 394 | 250 | 85 |
| Ga | 14 | 19 | 20 | 19 | 20 | 16 | 16 | 14 | 14 | 17 | 18 | 14 | 19 | 16 | 19 | 12 | 14 |
| Ta | 1.79 | 1.15 | 1.51 | 0.3 | 1.64 | 1.49 | 1.3 | 0.4 | 1.22 | 1.25 | 0.5 | 0.4 | 0.7 | 0.17 | 0.6 | 1.44 | 0.2 |
| Nb | 16.6 | 13.2 | 24.4 | 10.4 | 14.8 | 10.4 | 14.7 | 9.1 | 12.2 | 15.5 | 6.3 | 5 | 5.9 | 7.6 | 6.2 | 12.9 | 6.2 |
| Hf | 8.34 | 4.77 | 14.5 | 5.3 | 6.43 | 10.6 | 5.15 | 4.4 | 6.03 | 6.88 | 4.3 | 3.5 | 4.5 | 3.8 | 4.3 | 5.24 | 3.4 |
| Zr | 240 | 211 | 376 | 221 | 253 | 172 | 206 | 145 | 176 | 127 | 155 | 138 | 154 | 152 | 162 | 160 | 185 |
| Y | 35 | 32 | 60 | 29 | 38 | 24 | 14 | 23 | 19 | 24 | 28 | 28 | 25 | 32 | 25 | 17 | 14 |
| Th | 15.45 | 5.32 | 6.28 | 3.4 | 4.22 | 10.58 | 14.9 | 12.4 | 12.3 | 6.11 | 5.5 | 6.6 | 6.8 | 8.68 | 6.8 | 13.95 | 7.6 |
| U | 1.88 | 1.26 | 1.76 | 0.8 | 1.45 | 3.59 | 3.89 | 2.5 | 2.36 | 2.29 | 1.8 | 1.6 | 2 | 1.04 | 1.9 | 1.51 | 12.9 |
| La | n.d. | n.d. | 79.31 | 30.4 | n.d. | n.d. | n.d. | 41.1 | n.d. | 34.32 | 18.5 | 19.4 | 17.4 | n.d. | 20.6 | n.d. | 8.8 |
| Ce | n.d. | n.d. | 115.1 | 68.8 | n.d. | n.d. | n.d. | 81.6 | n.d. | 42.37 | 42.8 | 38.6 | 39.7 | n.d. | 43.9 | n.d. | 78.5 |
| Pr | n.d. | n.d. | 15.46 | 8.52 | n.d. | n.d. | n.d. | 8.57 | n.d. | 1.17 | 4.94 | 4.5 | 4.52 | n.d. | 5.18 | n.d. | 2.81 |
| Nd | n.d. | n.d. | 50.13 | 36.4 | n.d. | n.d. | n.d. | 31.5 | n.d. | 64.01 | 20.5 | 19.2 | 19 | n.d. | 21 | n.d. | 12.5 |
| Sm | n.d. | n.d. | 8.22 | 7.11 | n.d. | n.d. | n.d. | 5.49 | n.d. | 2.18 | 4.31 | 3.92 | 4.29 | n.d. | 4.68 | n.d. | 3.59 |
| Eu | n.d. | n.d. | 1.89 | 1.83 | n.d. | n.d. | n.d. | 1.03 | n.d. | 1.24 | 1.18 | 1.09 | 1.13 | n.d. | 1.14 | n.d. | 0.88 |
| Gd | n.d. | n.d. | 6.09 | 6.66 | n.d. | n.d. | n.d. | 4.88 | n.d. | 1.69 | 4.71 | 4.11 | 4.12 | n.d. | 4.8 | n.d. | 4.1 |
| Tb | n.d. | n.d. | 0.54 | 0.95 | n.d. | n.d. | n.d. | 0.73 | n.d. | n.d. | 0.81 | 0.73 | 0.74 | n.d. | 0.8 | n.d. | 0.75 |
| Dy | n.d. | n.d. | 2.84 | 5.1 | n.d. | n.d. | n.d. | 3.83 | n.d. | 0.01 | 5.39 | 4.71 | 5.1 | n.d. | 5.26 | n.d. | 4.06 |
| Ho | n.d. | n.d. | n.d. | 1.12 | n.d. | n.d. | n.d. | 0.81 | n.d. | n.d. | 1.02 | 0.96 | 1.07 | n.d. | 1.07 | n.d. | 0.79 |
| Er | n.d. | n.d. | 0.99 | 3.05 | n.d. | n.d. | n.d. | 2.3 | n.d. | 0.12 | 3.02 | 2.76 | 3.01 | n.d. | 3.13 | n.d. | 2.2 |
| Tm | n.d. | n.d. | n.d. | 0.44 | n.d. | n.d. | n.d. | 0.33 | n.d. | n.d. | 0.49 | 0.43 | 0.46 | n.d. | 0.46 | n.d. | 0.37 |
| Yb | n.d. | n.d. | 0.91 | 2.95 | n.d. | n.d. | n.d. | 2.25 | n.d. | n.d. | 3.18 | 2.81 | 3.18 | n.d. | 2.94 | n.d. | 2.53 |
| Lu | n.d. | n.d. | 0.12 | 0.5 | n.d. | n.d. | n.d. | 0.37 | n.d. | 0.03 | 0.5 | 0.45 | 0.44 | n.d. | 0.43 | n.d. | 0.4 |
| Chem.Lit | Psam. | CaO++ | CaO++ | CaO++ | CaO++ | Rest++ | Psam. | Rest++ | Psam. | Pelite | CaO++ | CaO++ | CaO++ | CaO++ | CaO++ | Psam. | Rest-- |
| Zr/Ti | 960 | 168.8 | 198.94 | 151.5 | 174.48 | 307.14 | 355.17 | 426.76 | 366.66 | 125.74 | 207.33 | 197.14 | 195.94 | 200 | 206.07 | 470.58 | 686.29 |
| Nb/Y | 0.47 | 0.41 | 0.4 | 0.35 | 0.38 | 0.43 | 1.05 | 0.39 | 0.64 | 0.64 | 0.22 | 0.17 | 0.22 | 0.23 | 0.24 | 0.75 | 0.41 |
| Th/Sc | 1.54 | 0.17 | 0.24 | 0.11 | 0.15 | 1.05 | 1.65 | 1.77 | 1.11 | 0.26 | 0.15 | 0.19 | 0.17 | 0.2 | 0.17 | 1.99 | 0.3 |
| Ti/Nb | 90 | 568 | 464 | 842 | 587 | 323 | 237 | 224 | 236 | 391 | 714 | 839 | 803 | 600 | 764 | 158 | 261 |
| CIA | 80.1 | 42.9 | 46.5 | 44.3 | 48.9 | 54.7 | 63.4 | 61.7 | 75.2 | 57.6 | 44.9 | 48.8 | 59.4 | 51 | 57.9 | 54.1 | 90.6 |
| PIA | 100 | 42.1 | 45.5 | 43.7 | 48.8 | 56.8 | 70.6 | 64.9 | 82.4 | 59.6 | 44.4 | 48.7 | 61.1 | 51.1 | 59.3 | 55.1 | 95.4 |
| CIW | 100 | 45.2 | 52.2 | 46.7 | 51.4 | 64.8 | 76.8 | 69.1 | 84.6 | 64.3 | 47.1 | 51.1 | 64.4 | 53.7 | 62.7 | 60.2 | 95.7 |
| Eu/Eu* | n.d. | n.d. | 0.82 | 0.81 | n.d. | n.d. | n.d. | 0.61 | n.d. | 1.97 | 0.8 | 0.83 | 0.82 | n.d. | 0.74 | n.d. | 0.7 |
| REE | n.d. | n.d. | 58.89 | 6.96 | n.d. | n.d. | n.d. | 12.34 | n.d. | n.d. | 3.93 | 4.67 | 3.7 | n.d. | 4.73 | n.d. | 2.35 |
| LREE | n.d. | n.d. | 6.07 | 2.69 | n.d. | n.d. | n.d. | 4.71 | n.d. | 9.91 | 2.7 | 3.12 | 2.55 | n.d. | 2.77 | n.d. | 1.54 |
| HREE | n.d. | n.d. | 5.42 | 1.83 | n.d. | n.d. | n.d. | 1.76 | n.d. | n.d. | 1.2 | 1.19 | 1.05 | n.d. | 1.32 | n.d. | 1.31 |
| Σ REE | n.d. | n.d | 281.6 | 173.83 | n.d. | n.d. | n.d | 184.79 | 0 | 147.14 | 111.35 | 103.67 | 104.16 | n.d. | 115.39 | n.d. | 122.28 |
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.