Table 5.
Descriptive statistics of REEs (µg g−1) in soils (n = 36).
| Element | Mean | Min | Median | Max | Skewness | Kurtosis | CV |
|---|---|---|---|---|---|---|---|
| La | 540.76 | 17.65 | 334.97 | 2770.36 | 1.86 | 3.67 | 1.16 |
| Ce | 1121.56 | 40.62 | 687.72 | 5797.34 | 1.90 | 3.81 | 1.16 |
| Pr | 119.09 | 3.91 | 68.66 | 638.91 | 1.94 | 4.09 | 1.20 |
| Nd | 458.58 | 16.10 | 269.25 | 2557.04 | 2.06 | 4.78 | 1.22 |
| Sm | 66.88 | 2.74 | 41.37 | 389.59 | 2.25 | 6.12 | 1.22 |
| Eu | 1.96 | 0.31 | 1.49 | 7.96 | 2.06 | 4.78 | 0.88 |
| Gd | 39.97 | 1.96 | 24.16 | 228.39 | 2.25 | 6.05 | 1.19 |
| Tb | 4.23 | 0.34 | 2.46 | 26.18 | 2.67 | 8.97 | 1.21 |
| Dy | 13.44 | 1.40 | 7.70 | 89.13 | 3.32 | 13.93 | 1.19 |
| Ho | 2.05 | 0.23 | 1.23 | 11.03 | 2.62 | 8.22 | 1.07 |
| Er | 5.37 | 0.64 | 3.67 | 32.50 | 3.23 | 13.28 | 1.08 |
| Tm | 0.93 | 0.09 | 0.51 | 4.99 | 2.37 | 5.71 | 1.19 |
| Yb | 4.30 | 0.65 | 3.12 | 26.32 | 3.61 | 16.44 | 1.05 |
| Lu | 0.95 | 0.10 | 0.46 | 5.66 | 2.50 | 6.65 | 1.26 |
| ΣREE | 2431.19 | 101.31 | 1469.72 | 12,911.35 | 1.98 | 4.32 | 1.17 |
| ΣLREE | 2308.82 | 85.40 | 1403.06 | 12,160.34 | 1.94 | 4.04 | 1.18 |
| ΣHREE | 71.24 | 6.48 | 44.25 | 421.50 | 2.65 | 8.88 | 1.14 |
| Eu/Eu* | 0.21 | 0.06 | 0.11 | 0.78 | 1.59 | 1.39 | 0.95 |
| Ce/Ce* | 1.46 | 0.98 | 1.04 | 4.51 | 2.51 | 4.66 | 0.75 |
| (La/Sm) N | 5.31 | 2.87 | 4.92 | 10.06 | 2.29 | 4.58 | 0.29 |
| (La/Yb) N | 84.35 | 5.40 | 82.44 | 211.66 | 0.28 | −1.15 | 0.70 |
| (Gd/Yb) N | 7.23 | 1.27 | 7.25 | 18.59 | 0.39 | −0.70 | 0.64 |
CV, coefficient variant; Min, minimum; Max, maximum. Eu/Eu* and Ce/Ce* are the calculated europium and cerium anomalies, respectively. Subscript N indicates chondrite normalized values.