Research Article
Lanthanides Revealing Anthropogenic Impact within a Stratigraphic Sequence
Table 3
Rare Earth Elements sample concentrations and their standard deviations (±st/
√ ).
| M | Ml | M2 | M3 | M4 | M5 | M6 | M7 | M8 | M9 | M10 | M11 | M12 | M13 | M14 | M15 |
| La | 10.4 | 13.7 | 17.0 | 16.6 | 13.9 | 14.6 | 12.2 | 14.3 | 13.8 | 18.4 | 13.1 | 12.2 | 17.8 | 12.4 | 13.5 | ±st/√ | 0.8 | 0.8 | 0.3 | 1.5 | 1.4 | 0.8 | 0.4 | 1.5 | 0.9 | 0.5 | 0.2 | 0.5 | 1.4 | 0.8 | 1.2 | Ce | 12.4 | 16.79 | 21.2 | 19.6 | 17.1 | 17.4 | 14.7 | 16.8 | 16.58 | 21.4 | 15.86 | 14.6 | 22.0 | 15.24 | 16.9 | ±st/√ | 0.9 | 1.09 | 0.2 | 1.7 | 1.9 | 0.9 | 0.6 | 1.8 | 1.09 | 0.4 | 0.14 | 0.6 | 1.6 | 0.96 | 1.4 | Pr | 2.2 | 2.9 | 3.42 | 3.4 | 2.9 | 3.0 | 2.54 | 3.0 | 2.8 | 3.71 | 2.58 | 2.56 | 3.6 | 2.60 | 2.9 | ±st/√ | 0.2 | 0.2 | 0.06 | 0.3 | 0.4 | 0.2 | 0.12 | 0.3 | 0.2 | 0.08 | 0.09 | 0.09 | 0.3 | 0.14 | 0.2 | Nd | 10.1 | 13.0 | 15.0 | 15.6 | 13.0 | 13.2 | 11.6 | 13.3 | 12.4 | 16.71 | 11.4 | 11.4 | 15.7 | 11.7 | 12.9 | ±st/√ | 0.5 | 0.8 | 0.4 | 1.3 | 1.2 | 0.6 | 0.7 | 1.6 | 0.9 | 0.05 | 0.4 | 0.2 | 1.5 | 0.7 | 1.2 | Sm | 1.79 | 2.25 | 2.49 | 2.7 | 2.2 | 2.26 | 2.05 | 2.3 | 2.08 | 2.84 | 2.06 | 1.98 | 2.6 | 2.09 | 2.3 | ±st/√ | 0.10 | 0.12 | 0.04 | 0.3 | 0.3 | 0.09 | 0.11 | 0.2 | 0.12 | 0.10 | 0.05 | 0.02 | 0.2 | 0.14 | 0.2 | Eu | 0.43 | 0.52 | 0.562 | 0.62 | 0.52 | 0.51 | 0.47 | 0.54 | 0.47 | 0.66 | 0.44 | 0.458 | 0.60 | 0.48 | 0.54 | ±st/√ | 0.03 | 0.05 | 0.006 | 0.07 | 0.07 | 0.02 | 0.02 | 0.05 | 0.03 | 0.02 | 0.04 | 0.010 | 0.04 | 0.04 | 0.04 | Gd | 1.83 | 2.22 | 2.40 | 2.69 | 2.21 | 2.20 | 2.04 | 2.30 | 2.03 | 2.88 | 1.88 | 1.94 | 2.42 | 2.07 | 2.22 | ±st/√ | 0.11 | 0.08 | 0.06 | 0.2 | 0.4 | 0.12 | 0.11 | 0.3 | 0.11 | 0.09 | 0.06 | 0.05 | 0.18 | 0.14 | 0.31 | Tb | 0.29 | 0.348 | 0.361 | 0.42 | 0.34 | 0.341 | 0.32 | 0.36 | 0.32 | 0.45 | 0.29 | 0.304 | 0.37 | 0.33 | 0.34 | ±st/√ | 0.02 | 0.013 | 0.010 | 0.04 | 0.05 | 0.013 | 0.02 | 0.05 | 0.02 | 0.02 | 0.02 | 0.005 | 0.04 | 0.03 | 0.04 | Dy | 1.38 | 1.64 | 1.660 | 2.00 | 1.59 | 1.59 | 1.51 | 1.71 | 1.48 | 2.12 | 1.36 | 1.42 | 1.68 | 1.52 | 1.62 | ±st/√ | 0.11 | 0.12 | 0.008 | 0.16 | 0.20 | 0.09 | 0.04 | 0.18 | 0.10 | 0.03 | 0.06 | 0.02 | 0.17 | 0.12 | 0.11 | Ho | 0.30 | 0.36 | 0.349 | 0.43 | 0.34 | 0.337 | 0.327 | 0.37 | 0.32 | 0.457 | 0.3 | 0.3059 | 0.36 | 0.33 | 0.35 | ±st/√ | 0.03 | 0.02 | 0.010 | 0.05 | 0.05 | 0.009 | 0.015 | 0.05 | 0.02 | 0.013 | 0.02 | 0.0011 | 0.03 | 0.03 | 0.04 | Er | 0.77 | 0.89 | 0.87 | 1.10 | 0.85 | 0.85 | 0.83 | 0.93 | 0.80 | 1.16 | 0.737 | 0.77 | 0.91 | 0.83 | 0.87 | ±st/√ | 0.04 | 0.06 | 0.06 | 0.11 | 0.14 | 0.05 | 0.06 | 0.11 | 0.03 | 0.04 | 0.009 | 0.02 | 0.08 | 0.05 | 0.10 | Tm | 0.107 | 0.1271 | 0.120 | 0.15 | 0.12 | 0.116 | 0.1163 | 0.128 | 0.109 | 0.162 | 0.103 | 0.108 | 0.128 | 0.117 | 0.123 | ±st/√ | 0.002 | 0.0013 | 0.007 | 0.02 | 0.02 | 0.007 | 0.0013 | 0.009 | 0.005 | 0.011 | 0.002 | 0.001 | 0.011 | 0.008 | 0.019 | Yb | 0.61 | 0.72 | 0.689 | 0.87 | 0.67 | 0.67 | 0.66 | 0.75 | 0.63 | 0.94 | 0.59 | 0.61 | 0.73 | 0.67 | 0.71 | ±st/√ | 0.02 | 0.03 | 0.003 | 0.06 | 0.11 | 0.03 | 0.03 | 0.09 | 0.04 | 0.07 | 0.03 | 0.02 | 0.06 | 0.03 | 0.11 | Lu | 0.096 | 0.110 | 0.105 | 0.135 | 0.105 | 0.103 | 0.101 | 0.117 | 0.096 | 0.146 | 0.093 | 0.094 | 0.114 | 0.1032 | 0.111 | ±st/√ | 0.003 | 0.008 | 0.004 | 0.011 | 0.018 | 0.002 | 0.005 | 0.010 | 0.006 | 0.006 | 0.002 | 0.004 | 0.011 | 0.0002 | 0.010 | Sc | 6.1 | 7.3 | 8.6 | 8.1 | 6.9 | 8.5 | 7.1 | 7.6 | 7.8 | 9.4 | 6.42 | 8.1 | 11.4 | 7.4 | 8.5 | ±st/√ | 0.4 | 0.6 | 0.2 | 0.5 | 0.4 | 0.6 | 0.5 | 0.9 | 1.3 | 0.4 | 0.08 | 1.4 | 0.7 | 0.6 | 0.9 | Y | 11.5 | 13.8 | 13.0 | 17.1 | 12.4 | 15.3 | 12.2 | 14.8 | 13.4 | 18.3 | 11.3 | 13.4 | 13.95 | 12.5 | 13.3 | ±st/√ | 0.8 | 0.8 | 0.3 | 1.2 | 1.4 | 1.3 | 0.7 | 1.7 | 1.2 | 0.8 | 0.2 | 1.2 | 0.98 | 0.9 | 1.2 |
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Note: Value expressed in µg/g.
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