Distribution of Trace Elements, Sr-C Isotopes, and Sedimentary Characteristics as Paleoenvironmental Indicator of the Late Permian Linxi Formation in the Linxi Area, Eastern Inner Mongolia
Table 1
The trace element concentration (in ug/g) of the Linxi Formation in the Guandi profile.
Number
LG 3-1H
LG 3-3H
LG 3-6H
LG 3-7H
LG 3-8H
LG 4-1-1H
LG 8-1
LG 29-1H
LG 40-2
LG 40-5
LG 48-2
LG 48-2H
LG 72-1
LG 72-2
LG 72-3
LG 72-4
LG 72-5H
LG 73-1
LG 73-2
LG 75-4
Lithology
Limestone
Limestone
Mudstone
Limestone
Lime mudstone
Mudstone
Bioclastic limestone
Mudstone
Bioclastic limestone
Bioclastic limestone
Lime mudstone
Lime mudstone
Bioclastic limestone
Bioclastic limestone
Bioclastic limestone
Bioclastic limestone
Bioclastic limestone
Bioclastic limestone
Bioclastic limestone
Mudstone
B
18.5
18
94.7
11.5
150
95.7
16.6
57.3
8.34
15.1
33.4
46.7
6.4
14.2
10.8
8.37
13.6
10
3.45
38.1
Ga
4.34
5.28
20.5
3.82
18.9
22.1
6.57
17.1
3.96
0.52
8.1
7.7
1.91
3.15
3.67
3.43
4.35
2.58
0.68
20.1
Rb
27.9
22.4
143
19.7
197
153
39
122
10.7
14.8
41.7
55.6
14.4
24.7
26.9
16.2
15.4
20.8
3.34
116
Sr
1193
950
82.7
1259
351
131
917
58.9
1172
486
692
626
1164
1449
1059
1465
871
1140
3052
250
Ba
166
157
442
70.6
519
461
109
591
49.5
22.2
224
355
86.2
150
204
133
129
95.1
219
581
La
5.39
5.85
33.7
3.38
29.6
37.3
8.14
38.4
7.37
1.95
15.1
14.3
8.96
9.12
7.44
13.4
18.1
7.38
3.74
34.9
Ce
11.8
12.1
70.2
7.3
62.3
77.2
15.9
78.5
15.9
4.06
31.7
25.3
15.4
16
14.3
22.3
35.7
14.1
8.13
60.1
Pr
1.37
1.31
8.15
0.78
7.2
8.98
1.92
9.35
1.96
0.4
3.81
2.99
1.69
1.87
1.51
2.48
4.12
1.52
0.97
7.2
Nd
5.44
5.13
32.2
3.24
26.9
35.7
7.68
37.3
8.42
1.73
15.4
12.6
6.77
8
6.29
9.8
17.1
6.33
4.86
28.1
Sm
1.21
1.16
6.39
0.68
5
7.2
1.55
7.25
2.11
0.37
3.4
2.72
1.54
1.75
1.33
2.18
3.43
1.48
1.41
5.91
Eu
0.43
0.91
1.19
0.31
1.45
1.26
0.53
1.35
0.85
0.13
1.07
0.97
0.54
0.83
0.48
0.74
0.76
0.54
0.73
1.26
Gd
1.29
1.17
6
0.78
5.1
7.17
1.49
6.79
2.41
0.37
3.76
2.83
1.78
1.97
1.39
2.57
3.41
1.68
1.82
5.75
Tb
0.2
0.19
0.97
0.12
0.85
1.09
0.23
1.08
0.38
0.06
0.64
0.44
0.28
0.29
0.21
0.39
0.57
0.26
0.25
0.84
Dy
1.1
0.98
5.61
0.7
4.99
6.1
1.38
5.96
2.22
0.37
3.62
2.75
1.75
1.64
1.33
2.45
3.2
1.6
1.41
5.24
Ho
0.23
0.19
1.15
0.14
1.04
1.24
0.28
1.27
0.45
0.08
0.77
0.58
0.38
0.33
0.27
0.51
0.66
0.35
0.26
1.11
Er
0.65
0.58
3.21
0.41
2.82
3.51
0.81
3.7
1.19
0.24
2.08
1.68
1.09
0.89
0.86
1.57
1.91
1.01
0.67
3.12
Tm
0.09
0.08
0.45
0.05
0.42
0.52
0.13
0.55
0.16
0.03
0.32
0.27
0.16
0.12
0.13
0.23
0.28
0.15
0.09
0.47
Yb
0.6
0.52
3.04
0.36
2.58
3.37
0.8
3.64
1.06
0.26
2.13
1.82
1
0.74
0.83
1.47
1.72
0.92
0.58
3.06
Lu
0.1
0.08
0.49
0.06
0.39
0.5
0.13
0.55
0.15
0.02
0.33
0.26
0.15
0.11
0.12
0.23
0.26
0.13
0.08
0.46
ΣREE
29.90
30.25
172.75
18.3
150.64
191.14
40.97
195.69
44.63
10.07
84.13
69.51
41.49
43.66
36.49
60.32
91.22
37.45
25.00
157.52
LREE
25.64
26.46
151.83
15.69
132.45
167.64
35.72
172.15
36.61
8.64
70.48
58.88
34.90
37.57
31.35
50.90
79.21
31.35
19.84
137.47
HREE
4.26
3.79
20.92
2.62
18.19
23.50
5.25
23.54
8.02
1.43
13.65
10.63
6.59
6.09
5.14
9.42
12.01
6.10
5.16
20.05
LaSN/YbSN
0.66
0.83
0.82
0.69
0.85
0.82
0.75
0.78
0.51
0.55
0.52
0.58
0.66
0.91
0.66
0.67
0.78
0.59
0.48
0.84
(La/La)
1.03
1.13
1.07
1.28
0.94
1.09
1.13
1.09
1.23
1.63
1.09
1.47
1.42
1.57
1.47
1.40
1.29
1.44
2.73
1.22
(Ce/Ce)
1.00
1.01
0.98
1.04
0.98
0.97
0.93
0.96
0.96
1.06
0.96
0.89
0.91
0.89
0.98
0.89
0.95
0.97
0.98
0.87
(Eu/Eu)
1.61
3.66
0.90
1.98
1.35
0.82
1.64
0.90
1.75
1.65
1.40
1.64
1.52
2.08
1.65
1.45
1.04
1.59
2.10
1.02
(Gd/Gd)
0.98
0.89
0.98
1.04
0.97
1.02
1.07
0.96
1.02
1.05
0.92
1.11
1.09
1.06
1.15
1.14
0.93
1.09
1.13
1.17
Y/Ho
26.61
31.53
24.87
25.29
24.33
25.00
31.54
24.72
30.89
34.38
25.32
28.97
37.11
36.06
34.15
33.73
27.88
35.43
38.46
27.21
LaSN/YbSN is the ratio of La and Yb by PAAS normalized.
