Table 2 Chemical composition of the Izvir shales and cherts (major elements in %, trace elements in ppm (mg/kg), Ce/Ce* cerium anomaly)

59.32

1.00

20.53

1.65

0.01

2.34

0.91

0.09

5.81

0.56

7.50

0.02

61.35

0.91

16.90

7.83

0.01

0.93

0.39

0.15

2.62

0.20

8.40

0.05

60.96

0.89

19.55

2.01

0.01

2.02

0.42

0.12

4.43

0.22

9.10

0.05

60.53

0.75

17.04

4.15

0.03

0.22

0.07

0.12

14.40

0.16

2.50

0.02

51.37

0.62

20.57

7.57

0.31

1.69

0.48

0.10

4.61

0.37

12.00

0.09

91.55

0.11

3.11

1.39

0.17

0.31

0.11

0.08

0.64

0.07

2.30

0.05

62.25

0.73

16.88

2.95

0.01

2.25

0.37

0.09

6.68

0.30

7.10

0.04

96.26

0.04

1.00

0.43

0.03

0.12

0.07

0.05

0.40

0.06

1.10

0.03

67.78

0.52

13.53

3.55

0.55

1.78

0.21

0.09

4.34

0.12

7.30

0.09

58.80

0.68

18.90

1.67

0.02

1.99

0.20

0.09

11.13

0.06

6.20

0.05

1.7

171

285

13.0

23.7

23.8

27.3

6.0

<0.1

21.0

56.0

11.3

34.1

157

326

19.4

22.6

133.5

23.4

5.2

0.9

18.2

141.0

39.7

2.5

137

291

9.5

27.9

35.2

22.4

5.4

<0.1

18.4

39.0

18.7

14.2

5

42

15.3

1.0

67.7

8.1

4.2

0.4

5.6

72.0

52.4

18.9

130

248

26.3

30.5

76.4

22.7

3.9

0.9

10.4

220.0

54.2

6.2

34

65

5.6

3.4

17.1

3.9

0.6

0.2

1.9

39.0

14.6

4.1

103

188

18.8

17.4

124.3

16.9

4.2

<0.1

13.2

82.0

44.7

3.2

41

26

57.6

0.7

18.0

0.9

0.3

<0.1

0.7

28.0

5.8

8.2

89

197

33.0

19.2

116.8

18.1

3.4

0.5

9.4

110.0

89.8

5.7

55

84

10.9

10.9

95.5

15.7

7.8

<0.1

10.6

67.0

30.0

191.3

29

58.5

1.5

31.7

0.1

7.7

212

4.5

117.8

31

185.8

160.1

19

49.9

1.3

14.3

0.2

3.5

175

4.4

69.2

191

174.7

176.2

22

55.7

1.2

27.6

0.2

6.6

157

4.4

135.6

56

169.3

74.8

13

12.5

0.5

4.5

0.1

6.3

49

2.7

28.1

119

104.3

146.3

30

66.6

0.8

17.4

0.5

4.5

151

2.9

179.5

146

118.8

26.4

7

12.5

0.1

3.3

0.2

1.1

26

0.4

31.3

32

19.8

133.1

21

25.3

0.9

17.6

0.2

4.3

155

3.3

690.7

87

138.9

8.5

3

8.6

0.4

1.1

0.1

0.5

5

367.4

17.2

16

8.9

119.5

24

25.5

0.7

14.3

0.3

4.0

111

2.7

151.6

106

118.6

110.0

16

10.5

1.4

19.8

0.1

6.2

84

2.4

103.6

73

187.2

116.1

127.7

28.2

130.4

24.9

5.7

20.5

2.7

14.8

2.9

8.0

1.1

6.1

0.9

0.57

72.8

90.7

16.4

70.4

14.0

2.9

11.9

1.7

10.1

2.0

5.5

0.8

4.6

0.7

0.67

135.0

193.4

41.3

193.1

37.3

7.6

28.8

3.6

18.6

3.4

8.3

1.1

6.5

0.9

0.66

16.1

14.4

3.8

17.1

4.0

0.8

3.5

0.6

4.0

0.8

2.4

0.4

2.5

0.4

0.47

173.3

121.6

36.2

165.3

32.2

7.0

29.8

4.1

23.6

4.7

12.4

1.7

10.2

1.4

0.39

29.4

35.3

6.2

26.3

5.1

1.2

4.5

0.7

3.9

0.8

2.4

0.3

1.7

0.3

0.67

243.9

121.2

57.9

272.8

57.0

13.3

70.8

10.2

62.5

13.7

37.2

4.6

23.9

3.8

0.26

16.6

11.7

3.0

13.2

2.3

0.5

2.5

0.3

1.8

0.4

1.0

0.1

0.7

0.1

0.42

143.0

150.7

28.5

125.9

23.7

5.1

21.9

3.0

18.0

3.9

10.4

1.5

8.8

1.3

0.60

63.7

24.7

12.0

52.4

10.0

2.3

11.2

1.7

10.3

2.3

6.7

0.9

5.0

0.8

0.23