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Table 1 Concentration of major (%), trace, and rare earth elements (ppm) of the studied carbonate rocks as well as ratios

From: Geochemical studies of carbonates of the Tayiba Formation (Upper Eocene), Abu Zenima area, West Central Sinai

Element

1

2

3

4

5

6

7

8

Min.

Max.

Average

CaO

26.62

25.73

27.1

25.94

27.54

25.41

24.95

27.8

24.95

27.8

26.39

MgO

1.77

1.81

1.54

0.94

1.99

2.1

2.4

2.5

0.94

2.5

1.88

SiO2

26.75

26.63

25.31

27.37

25.14

24.7

26.4

25.1

24.7

27.37

25.93

Al2O3

10.2

10.15

10.54

10.94

12.15

9.85

11.2

10.34

9.85

12.15

10.67

Fe2O3

3.39

3.45

2.97

3.54

2.15

3.41

3.2

2.94

2.15

3.54

3.13

Na2O

0.26

2.58

1.37

0.94

1.04

0.27

1.94

1.64

0.26

2.58

1.26

K2O

0.71

0.62

0.82

0.74

0.51

0.75

0.84

0.56

0.51

0.84

0.69

P2O5

0.37

0.37

0.36

0.35

0.41

0.41

0.52

0.31

0.31

0.52

0.39

TiO2

0.68

0.67

0.65

0.61

0.75

0.81

0.75

0.67

0.61

0.81

0.70

SrO

0.115

0.114

0.12

0.12

0.18

0.13

0.12

0.14

0.114

0.18

0.13

SO3

0.67

0.74

0.69

0.79

0.54

0.84

0.65

0.85

0.54

0.85

0.72

Cl

0.11

0.12

0.1

0.11

0.17

0.16

0.18

0.18

0.1

0.18

0.14

LOI

28.2

26.91

17.92

27.01

27.41

31.12

26.82

26.93

17.92

31.12

26.54

Norm. Dolom.

8.1

8.28

7.04

4.3

9.1

9.61

10.98

11.44

4.3

11.44

8.61

V

53.4

60

80

80.1

95

92

97

100

53.4

100

82.19

Cr

59.6

50.3

60.4

40.6

71.2

75

78

80

40.6

80

64.39

Mn

238.8

250.1

325.4

280.1

310

315

340

384

238.8

384

305.43

Co

5.6

6.7

5.8

7.1

8.4

6.8

7.9

8.9

5.6

8.9

7.15

Ni

47.2

50.3

61.4

62.8

71.52

68

79

90

47.2

90

66.28

Cu

10.1

10.5

12.4

15.3

16.4

15.2

17.3

17.9

10.1

17.9

14.39

Zn

109.1

120

112.8

151.2

165

105

164

134

105

165

132.64

Mo

3.5

4.2

5.7

5.9

6.2

4.8

6.4

7.9

3.5

7.9

5.58

Zr

129.4

135.1

140.8

159

145

159

164

179

129.4

179

151.41

Pb

7.6

8.6

9.1

10.1

12

11.4

12.9

16.1

7.6

16.1

10.98

Rb

19

20

25

30

24

26

29

32

19

32

25.63

Ga

11.4

12.5

14.3

12.3

13.7

13.2

14.2

15.4

11.4

15.4

13.38

Se

2

3

3

4

5

3

4

6

2

6

3.75

Br

2.5

3

4

5.5

5.4

3.1

4.7

4.5

2.5

5.5

4.09

Y

19.1

20.2

19.8

24.3

27.4

20.4

24.1

28.5

19.1

28.5

22.98

Nb

13.7

15.4

16.2

14.8

17.2

18.7

15.4

16.4

13.7

18.7

15.98

As

3.9

4.5

6.2

4.8

7.1

5.4

4.7

7.5

3.9

7.5

5.51

Te

2.1

2.5

2.3

3.7

3.9

3.1

4.2

3.8

2.1

4.2

3.20

Sb

4.1

4.5

5.1

4.8

5.7

2.5

3.1

3.8

2.5

5.7

4.20

I

23

25

27

29

30

29

25

34

23

34

27.75

Cs

7

8

6

9

8

8

7

8

6

9

7.63

Ba

162.7

170.5

180.3

185

190

189

172

201

162.7

201

181.31

La

27.4

28.5

29

30

35

37

25

40

25

40

31.49

Nd

13.1

15.2

12.4

13.9

16.7

14.8

15.1

17.2

12.4

17.2

14.80

Sm

17.4

18.4

20.3

19.7

21.8

19.9

20.2

22.7

17.4

22.7

20.05

Hf

0.3

0.4

0.3

0.5

0.6

0.4

0.5

0.6

0.3

0.6

0.45

Sc

24

22

27

26

27

31

32

35

22

35

28.00

W

15.8

16.8

17.6

17.9

18.4

18.1

14.9

19.2

14.9

19.2

17.34

Ti

2

2

3

2

2

2

3

3

2

3

2.38

Ce

15

18

19

22

25

26

25

27

15

27

22.13

U

1.1

1.3

1.7

2.1

2.3

2.1

2.4

3.4

1.1

3.4

2.05

Th

8.6

7.9

9.3

10.2

10.4

9.4

8.4

10.8

7.9

10.8

9.38

Ta

4

3

2

4

4

3

4

4

2

4

3.50

U/Mo

0.31

0.31

0.3

0.36

0.37

0.44

0.38

0.43

0.31

0.43

0.37

V/Mo

15.26

14.29

14.04

13.58

15.32

19.17

15.16

12.66

15.26

12.66

14.74

V/(V+Cr)

0.47

0.54

0.57

0.66

0.57

0.55

0.55

0.56

0.57

0.56

0.60

ΣLREEs

84.30

92.60

95.00

97.90

112.20

110.90

99.50

122.30

84.3

122.3

101.84

ΣHREEs

43.10

42.20

46.80

50.30

54.40

51.40

56.10

63.50

42.2

63.5

50.98

ΣREEs

366.50

390.40

412.80

429.20

459.90

444.60

414.10

493.60

366.5

493.6

426.39

La/Ce

1.83

1.58

1.53

1.36

1.40

1.42

1.00

1.48

1.67

1.48

1.42