The Distribution and Composition Characteristics of Siliceous Rocks from Qinzhou Bay-Hangzhou Bay Joint Belt, South China: Constraint on the Tectonic Evolution of Plates in South China
Table 4
REE analysis results (10ā6) and related geochemical indices for siliceous rocks from the Dongxiang area.
No.
La
Ce
Pr
Nd
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
REE
(La/Ce)N
(La/Yb)N
Ce
Eu
(La/Lu)N
DX013a
22.90
44.95
5.31
19.78
3.61
0.95
2.88
0.45
2.44
0.51
1.50
0.25
1.56
0.27
107.35
1.06
1.08
0.94
1.39
0.97
DX013b
22.55
42.95
5.01
18.57
3.41
1.08
2.59
0.39
2.10
0.45
1.26
0.20
1.26
0.23
102.05
1.09
1.32
0.93
1.72
1.11
DX015
21.03
42.05
4.90
17.92
3.27
1.06
2.54
0.39
2.17
0.44
1.31
0.22
1.46
0.24
98.99
1.04
1.06
0.96
1.73
1.01
DX016
35.23
72.14
8.15
29.98
5.13
1.34
3.89
0.57
3.04
0.61
1.71
0.28
1.77
0.32
164.16
1.02
1.47
0.98
1.41
1.26
DX020
19.38
36.98
4.28
16.00
3.00
0.66
2.71
0.44
2.53
0.54
1.59
0.27
1.74
0.30
90.41
1.09
0.82
0.94
1.08
0.74
DX024
19.45
35.78
4.14
16.22
3.32
2.01
3.11
0.52
2.91
0.62
1.84
0.29
1.81
0.32
92.35
1.13
0.79
0.92
2.94
0.69
DX025
10.55
21.51
2.72
11.05
2.52
1.49
2.78
0.47
2.78
0.56
1.63
0.26
1.71
0.31
60.32
1.02
0.46
0.93
2.65
0.39
DX026
2.99
6.37
0.86
3.95
1.36
1.00
2.53
0.60
4.07
0.90
2.52
0.38
2.28
0.38
30.21
0.98
0.1
0.92
2.54
0.09
DX027
23.36
45.28
5.44
21.73
4.67
2.39
4.92
0.75
3.99
0.77
2.17
0.34
2.19
0.37
118.37
1.08
0.79
0.93
2.35
0.72
DX028
11.46
22.51
2.74
11.08
2.30
1.27
2.31
0.40
2.34
0.50
1.41
0.24
1.58
0.29
60.42
1.06
0.53
0.93
2.6
0.45
Aver.
18.89
37.05
4.35
16.63
3.26
1.32
3.02
0.50
2.84
0.59
1.69
0.27
1.74
0.30
92.46
1.06
0.84
0.94
2.04
0.74
N represent normalized by PAAS [65]; Ce and Ce come from /()1/2 and /()1/2 [66].
