Table 2 Trace element content range and average (10−6) and related parameters.

From: Paleoenvironmental reconstruction of the Middle Ordovician Majiagou Formation in the northeastern Ordos Basin and its effect on organic matter enrichment

 

Ce

Co

Cr

La

Mo

Ni

Sc

Sr

Th

Ma 5(20)

2.2–133.5

0.5–16.1

0.2–140

1.1–76.2

0.05–1.4

0.1–37.7

0.2–14.1

67.7–140.5

0.21–38.6

Ma 5avg

18.417

2.415

10.93

10.065

0.32

4.457

2.035

111.985

4.2245

Ma 4(13)

1.5–2.98

0.6–1

–

0.7–1.5

0.2–0.73

0.12–1.5

0.2–0.5

150.5–347

0.21–0.6

Ma 4avg

2.10

0.75

–

1.02

0.42

0.70

0.36

231.96

0.39

Ma 3(12)

2.4–20.3

0.6–4.8

0.2–20

1.1–10.8

0.17–1.65

0.8–10.7

0.2–5

88.8–9740

0.16–6.38

Ma 3avg

10.14

2.02

6.08

4.78

0.85

4.40

1.83

1806.92

2.22

Ma 1(17)

6.5–120.5

0.9–21.1

0.2–90

2.3–61.6

0.14–2.59

0.6–47.9

0.4–17.7

96.7–1975

0.37–20.6

Ma 1avg

69.36

11.42

58.78

35.36

0.71

25.59

9.36

603.60

10.72

PAAS

80

10

110

35

1

55

16

200

14.6

 

U

V

Hf

Zr

Ba

Mn

P

Pb

Mn/Sr

Ma 5(20)

0.27–14

0.5–144

0.1–6.9

1–33

1.4–291

23–99

20–1060

0.4–16.2

 

Ma 5avg

2.0985

16.825

0.9

28.6

43.51

58.2

153.5

4.063636

0.52

Ma 4(13)

0.29–0.97

1–3

–

2–5

2.1–27.5

9–20

10–30

0.5–2.5

 

Ma 4avg

0.54

2.08

–

3.00

9.07

12.69

15.45

1.47

0.05

Ma 3(12)

0.57–2.16

3–42

0.1–1

2–43

7.5–493

15–81

10–310

1.7–8.2

 

Ma 3avg

1.43

14.67

0.40

14.83

125.98

54.33

96.67

3.50

0.03

Ma 1(17)

0.16–5.5

3–122

0.1–10.5

2–381

8.9–572

37–184

30–760

0.9–23.1

 

Ma 1avg

2.74

77.65

3.10

114.70

311.30

107.59

412.94

9.84

0.18

PAAS

3.1

150

       
  1. The value in brackets is the number of samples, and this line of data represents the range from the minimum value to the maximum value; The avg represents the average value; the symbol '–' indicates that the content is less than 0.01; the PAAS value is quoted from Ref.27,28.
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