Table 1. Geophysical features of sampling sites, mineralogical and geochemical characteristics of the samples.
| Characteristic | TVG4 | TVG11 |
|---|---|---|
| Location | E 50.9277°, S 37.6251° | E 50.9643°, S 37.6174° |
| Sampling date | 11 January 2009 | 14 January 2009 |
| Depth (m) | 2086 | 1985 |
| Description | White sticky mud | Black loose sand |
| REE concn (mg/kg)1 | 19.82 | 21.08 |
| Trace element concn (mg/kg)2 | ||
| Li | 2.93 | 2.70 |
| Be | 0.06 | 0.06 |
| Sc | 1.54 | 1.27 |
| V | 8.55 | 8.23 |
| Cr | 6.38 | 5.53 |
| Co | 11.98 | 16.30 |
| Ni | 11.13 | 12.97 |
| Cu | 12.46 | 11.77 |
| Zn | 18.85 | 20.06 |
| Ga | 0.94 | 0.96 |
| Rb | 4.29 | 4.28 |
| Sr | 1494.00 | 1529.60 |
| Zr | 6.96 | 6.60 |
| Nb | 0.70 | 0.69 |
| Cs | 0.23 | 0.23 |
| Ba | 189.18 | 328.80 |
| Hf | 0.15 | 0.14 |
| Ta | 0.04 | 0.05 |
| Pb | 3.77 | 4.39 |
| Th | 0.41 | 0.48 |
| U | 0.18 | 0.17 |
| X-ray diffraction phase analysis content (%)3 | ||
| Calcite | 95.3 | 96.8 |
| Quartz | 0.7 | 0.4 |
| Aragonite | 1.3 | |
| Clay minerals | 2.7 | 2.8 |
| Carbon and oxygen isotope analysis (%)4 | ||
| δ13CPDB | 0.10 | 0.23 |
| δ18OPDB | 0.52 | 1.82 |
1,2,3 and 4Data are cited from Chen et al.22. REE: Rare Earth Element, PDB: Pee Dee Belemnite.