Petrochemistry and genetic indicators of talcose rock of Esie ... - RMZ

Petrochemistry and genetic indicators of talcose rock of Esie area, southwestern Nigeria
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Table 2. The REE chondrite-normalised value of the Esie talcose rocks
** Chondrite values obtained from Evensen et. al (1978)
1 2 3 4 5 6 7 8 9 10 11 12 Mean S834 Gt **
La 5.72 2.04 26.27 14.71 6.95 6.54 6.54 7.36 5.72 4.08 8.18 10.22 8.7 2.5919 12.26 0.2446
Ce 7.37 1.09 14.74 26.64 62.39 76.19 110.2 73.52 44.5 4.39 27.75 5.64 38.11 3.593 12.36 0.6379
Pr 3.84 1.66 15.36 10.79 6.85 4.98 6.23 5.5 3.53 2.7 7.16 8.92 6.43 -- -- 0.09637
Nd 2.95 1.27 10.98 7.6 5.7 3.6 4.64 3.8 2.32 2.11 5.49 6.54 4.75 4.453 3.79 0.4738
Sm 1.95 1.3 5.19 4.55 4.55 1.95 3.25 3.25 1.3 1.3 4.55 3.9 3.12 4.818 4.54 0.154
Eu 1.03 0.9 2.93 2.41 3.1 1.38 2.06 1.2 0.86 1.03 2.59 2.24 1.72 4.584 0.8617 0.05802
Gd 0.98 0.49 2.94 3.43 3.43 0.5 0.5 0.5 0.5 1.47 2.45 3.43 1.57 -- -- 0.2043
Dy 0.79 0.79 1.57 3.54 2.36 0.79 1.18 1.18 0.79 0.79 1.97 1.18 1.41 -- -- 0.2541
Er 0.6 0.6 1.2 4.22 1.8 0.6 1.2 1.2 0.6 1.2 1.8 1.2 1.38 -- -- 0.166
Yb 0.06 0.6 1.21 4.24 1.82 0.61 1.21 1.21 1.21 1.21 1.82 1.21 1.39 5.221 4.239 0.1651
Total 25.29 10.74 82.39 82.13 98.95 97.14 137.01 98.72 61.33 20.28 63.76 44.48
La/Yb n
95.3 3.4 21.96 3.46 3.82 10.72 5.4 6.08 4.72 3.37 4.49 8.45 6.26
Ce/Sm n
3.78 0.83 2.84 5.85 13.71 39.07 33.9 22.62 34.23 3.38 6.09 1.45 12.21
Ce/Yb n
122.83
1.817 12.18 6.28 34.28 124.91 91.07 6.56 36.78 3.62 8.38 4.66 27.42
La/Sm n
2.93 1.57 5.06 3.23 1.53 3.35 2.01 2.26 4.4 3.1 1.8 2.62 2.79
RMZ-M&G 2010, 57