Sandstones | Quartzites | |||||||||||
Chhattisgarh basin | Indravati basin | Sakoli basin | Saucer basin | |||||||||
Elements | LF | CF | KF | TF | PF | JF | ||||||
(in ppm) | RN-438 | RN-423 | RD-405 | RD-409 | RD-520 | JC-542 | JT-547 | Average | DS-526 | AD-536 | ST-530 | Average |
La | 8.6 | 9.4 | 3.4 | 2.9 | 4 | 16.9 | 9.2 | 7.8 | 5.4 | 69.7 | 21.3 | 32.2 |
Ce | 16.9 | 17.8 | 6.2 | 5.3 | 7 | 30.7 | 18 | 14.6 | 11.7 | 136.5 | 39 | 62.4 |
Pr | 1.7 | 1.7 | 0.75 | 0.62 | 0.77 | 3.4 | 2 | 1.6 | 1 | 14.5 | 3.9 | 6.48 |
Nd | 6.7 | 6.6 | 2.7 | 2.2 | 2.2 | 12.2 | 8 | 5.8 | 3.7 | 57 | 13.9 | 24.9 |
Sm | 1 | 0.98 | 0.56 | 0.47 | 0.33 | 2.2 | 1.6 | 1 | 0.74 | 10.8 | 2.5 | 4.7 |
Eu | 0.22 | 0.16 | 0.13 | 0.11 | 0.07 | 0.43 | 0.29 | 0.2 | 0.1 | 1.6 | 0.28 | 0.67 |
Gd | 0.83 | 0.84 | 0.46 | 0.37 | 0.39 | 2 | 1.3 | 0.91 | 0.62 | 8.8 | 1.7 | 3.7 |
Tb | 0.12 | 0.11 | 0.08 | 0.06 | 0.07 | 0.43 | 0.22 | 0.16 | 0.1 | 1.4 | 0.26 | 0.61 |
Dy | 0.56 | 0.58 | 0.39 | 0.31 | 0.38 | 2.7 | 1 | 0.87 | 0.66 | 10.3 | 1.5 | 4.1 |
Ho | 0.1 | 0.09 | 0.07 | 0.05 | 0.08 | 0.57 | 0.22 | 0.17 | 0.07 | 1.2 | 0.16 | 0.48 |
Er | 0.28 | 0.3 | 0.23 | 0.16 | 0.24 | 1.7 | 0.62 | 0.5 | 0.23 | 4.2 | 0.53 | 1.6 |
Tm | 0.04 | 0.05 | 0.04 | 0.03 | 0.04 | 0.32 | 0.11 | 0.09 | 0.03 | 0.57 | 0.08 | 0.23 |
Yb | 0.33 | 0.32 | 0.28 | 0.19 | 0.26 | 1.9 | 0.65 | 0.57 | 0.36 | 6 | 0.87 | 2.4 |
Lu | 0.04 | 0.04 | 0.03 | 0.02 | 0.04 | 0.32 | 0.1 | 0.09 | 0.06 | 1 | 0.16 | 0.41 |
Zr | 65.2 | 76.3 | 72.8 | 71.9 | 57.3 | 1243.2 | 154.7 | ND | 80.7 | 648.8 | 118.4 | ND |
Th | 1.9 | 2 | 1.9 | 1.5 | 1 | 9.3 | 4.3 | ND | 4.7 | 19.1 | 15.3 | ND |
Y | 2.9 | 2.6 | 2.2 | 1.7 | 2.4 | 16.4 | 6 | ND | 3.7 | 65.5 | 8.8 | ND |
LREE | 34.9 | 36.48 | 13.61 | 11.49 | 14.3 | 65.4 | 38.8 | 30.8 | 22.54 | 288.5 | 80.6 | 130 |
HREE | 2.52 | 2.49 | 1.71 | 1.3 | 1.57 | 10.37 | 4.51 | 3.56 | 2.23 | 35.07 | 5.54 | 14.2 |
LREE/HREE | 13.8 | 14.6 | 7.9 | 8.8 | 9.1 | 6.3 | 8.6 | 8.6 | 10.11 | 8.2 | 14.5 | 9.2 |
∑REE | 37.42 | 39 | 15.32 | 13 | 15.87 | 76 | 43.31 | 34 | 24.77 | 323.6 | 86.14 | 145 |
(La/Yb)n | 18.6 | 21 | 8.7 | 10.9 | 11 | 6.3 | 10.1 | 9.8 | 10.7 | 8.3 | 17.5 | 9.6 |
(Gd/Yb)n | 2 | 2.1 | 1.3 | 1.6 | 1.2 | 0.8 | 1.6 | 1.3 | 1.4 | 1.2 | 1.6 | 1.2 |
Eu/Eu* | 0.73 | 0.53 | 0.78 | 0.8 | 0.59 | 0.62 | 0.6 | 0.63 | 0.45 | 0.5 | 0.4 | 0.49 |