Sample area code

238U

232Th

40K

Th/U

K/U

K/Th

A

0.47 ± 0.16

1.06 ± 0.50

0.88 ± 0.15

2.64 ± 1.76

2.06 ± 0.89

1.06 ± 0.67

B

0.55 ± 0.18

1.39 ± 0.46

1.30 ± 0.27

2.52 ± 0.29

2.62 ± 1.08

1.04 ± 0.44

C

0.49 ± 0.10

1.73 ± 0.56

1.04 ± 0.22

3.67 ± 1.71

2.13 ± 0.43

0.68 ± 0.35

D

0.55 ± 0.13

2.07 ± 0.55

0.92 ± 0.24

3.84 ± 0.96

1.78 ± 0.77

0.45 ± 0.14

E

0.55 ± 0.24

2.48 ± 1.06

0.90 ± 0.38

5.06 ± 2.26

1.68 ± 0.46

0.40 ± 0.21

F

0.72 ± 0.13

2.30 ± 1.36

1.16 ± 0.38

3.06 ± 1.23

1.58 ± 0.21

0.57 ± 0.20

G

0.63 ± 0.12

2.21 ± 0.79

1.45 ± 0.32

3.74 ± 1.97

2.32 ± 0.37

0.75 ± 0.35

H

0.64 ± 0.11

1.72 ± 0.90

0.83 ± 0.17

2.69 ± 1.42

1.35 ± 0.47

0.65 ± 0.45

J

0.51 ± 0.15

2.08 ± 0.08

0.77 ± 0.29

4.33 ± 1.24

1.61 ± 0.74

0.37 ± 0.13

K

0.79 ± 0.45

1.68 ± 0.28

0.92 ± 0.32

2.46 ± 0.79

1.29 ± 0.46

0.54 ± 0.12

L

0.48 ± 0.06

1.63 ± 0.64

1.39 ± 0.13

3.53 ± 1.64

2.94 ± 0.51

0.98 ± 0.44

M

0.46 ± 0.11

1.57 ± 0.19

1.06 ± 0.08

3.50 ± 0.77

2.38 ± 0.56

0.69 ± 0.15

N

0.50 ± 0.06

2.39 ± 1.35

0.99 ± 0.37

4.71 ± 2.28

1.99 ± 0.67

0.45 ± 0.13

P

0.49 ± 0.19

0.68 ± 0.64

1.12 ± 0.23

1.19 ± 0.85

2.60 ± 1.12

1.24 ± 1.23

Q

0.69 ± 0.22

2.39 ± 0.91

1.30 ± 0.50

3.57 ± 0.98

1.88 ± 0.33

0.58 ± 0.30

R

0.71 ± 0.18

1.84 ± 0.69

1.27 ± 0.11

2.67 ± 0.90

1.87 ± 0.35

0.77 ± 0.30

S

0.64 ± 0.02

1.65 ± 0.40

1.05 ± 0.16

2.57 ± 0.58

1.64 ± 0.25

0.67 ± 0.18

T

0.85 ± 0.28

2.62 ± 1.45

1.36 ± 0.42

2.92 ± 1.11

1.68 ± 0.56

0.64 ± 0.32

U

0.63 ± 0.14

2.05 ± 0.79

1.22 ± 0.54

3.31 ± 1.23

1.98 ± 0.82

0.62 ± 0.30

V

0.51 ± 0.29

2.21 ± 3.08

1.41 ± 0.48

3.08 ± 2.98

2.99 ± 0.73

0.68 ± 0.66

W

0.55 ± 0.11

1.61 ± 1.05

1.44 ± 0.17

2.68 ± 1.53

2.67 ± 0.61

1.94 ± 2.42

X

0.73 ± 0.38

2.30 ± 1.47

1.21 ± 0.79

3.03 ± 0.52

2.00 ± 1.72

0.64 ± 0.57

Y

0.97 ± 0.23

2.29 ± 1.26

0.74 ± 0.23

2.65 ± 1.67

0.84 ± 0.46

0.40 ± 0.20

Z

0.69 ± 0.17

3.04 ± 0.77

1.00 ± 0.11

4.56 ± 1.40

1.52 ± 0.47

0.34 ± 0.09

a

0.45 ± 0.13

1.90 ± 0.21

1.40 ± 0.46

4.42 ± 1.73

3.37 ± 1.98

0.73 ± 0.16

b

0.45 ± 0.03

2.40 ± 1.47

1.51 ± 0.18

5.46 ± 3.59

3.36 ± 0.22

0.80 ± 0.57

d

0.33 ± 0.08

2.15 ± 1.10

1.18 ± 0.37

6.35 ± 1.72

3.89 ± 2.13

0.68 ± 0.52

e

0.55 ± 0.14

1.72 ± 0.02

1.29 ± 0.26

3.24 ± 0.82

2.37 ± 0.14

0.75 ± 0.15

g

0.47 ± 0.00

2.44 ± 0.00

1.30 ± 0.00

5.23 ± 0.00

2.79 ± 0.00

0.53 ± 0.00

h

0.69 ± 0.21

2.13 ± 0.16

1.24 ± 0.14

3.17 ± 0.72

1.83 ± 0.35

0.58 ± 0.02

j

0.50 ± 0.18

2.42 ± 0.03

1.19 ± 0.10

5.27 ± 2.02

2.63 ± 1.18

0.49 ± 0.04

n

0.62 ± 0.01

1.69 ± 0.17

1.06 ± 0.10

2.75 ± 0.31

1.73 ± 0.15

0.64 ± 0.13

q

0.52 ± 0.21

1.27 ± 0.18

0.92 ± 0.04

2.57 ± 0.68

1.88 ± 0.67

0.72 ± 0.07

r

0.40 ± 0.10

2.10 ± 0.33

1.04 ± 0.03

5.53 ± 2.18

2.69 ± 0.74

0.50 ± 0.06

t

0.71 ± 0.12

2.04 ± 0.51

0.83 ± 0.41

2.97 ± 1.22

1.23 ± 0.79

0.39 ± 0.10

Average

0.59 ± 0.13

1.98 ± 0.47

1.13 ± 0.21

3.57 ± 1.13

2.15 ± 0.67

0.68 ± 0.30