Rock type

Sample code

Activity Concentration (Bq∙kg⁻¹)^a

Absorbed dose (nGy∙h⁻¹)^a

²²⁶Ra

²³²Th

⁴⁰K

¹³⁷Cs

Igneous Rocks

Granite (Rhyolite)

IGN01

9.56 ± 1.15

8.36 ± 1.66

2100.30 ± 25.40

ND^b

97.05

IGN02

12.00 ± 1.26

18.00 ± 2.84

2400.40 ± 26.50

3.62 ± 0.78

116.45

Diorite (Andesite)

IGN03

12.00 ± 2.35

10.68 ± 1.45

867.45 ± 19.10

2.40 ± 0.54

48.03

IGN04

11.50 ± 1.25

14.13 ± 2.25

1240.50 ± 21.40

ND

65.57

IGN05

10.07 ± 1.34

8.83 ± 2.70

445.70 ± 16.50

1.50 ± 0.40

28.57

IGN06

11.60 ± 1.11

11.50 ± 1.50

575.46 ± 17.07

4.00 ± 0.58

36.30

IGN07

16.05 ± 1.40

19.10 ± 3.00

2510.00 ± 27.10

3.48 ± 0.72

123.63

IGN08

17.50 ± 1.42

8.30 ± 1.67

2895.17 ± 28.30

ND

133.83

IGN09

17.00 ± 1.58

19.83 ± 2.00

2696.45 ± 27.80

ND

132.27

IGN10

5.86 ± 1.25

9.32 ± 2.45

1589.32 ± 22.83

ND

74.61

IGN11

13.10 ± 1.48

14.00 ± 2.00

4854.00 ± 35.00

ND

216.86

IGN12

15.60 ± 1.46

21.42 ± 1.82

2266.58 ± 26.20

2.44 ± 0.60

114.65

Gabbro (Basalt)

IGN13

6.88 ± 1.13

7.26 ± 1.83

328.08 ± 15.60

ND

21.25

IGN14

8.27 ± 1.00

5.12 ± 1.01

1021.56 ± 20.30

5.63 ± 0.63

49.50

IGN15

9.25 ± 1.34

9.00 ± 1.55

1066.17 ± 20.50

0.93 ± 0.40

54.16

IGN16

7.53 ± 1.27

7.76 ± 2.10

1297.30 ± 21.27

0.90 ± 0.43

62.26

IGN17

6.53 ± 1.10

8.31 ± 1.41

600.00 ± 17.27

1.60 ± 0.53

33.05

IGN18

6.18 ± 1.36

6.14 ± 2.40

3154.70 ± 29.43

ND

138.12

Range

5.86 - 17.50

5.12 - 21.42

328.08 - 4854.00

0.90 - 5.63

28.57 - 216.86

Average

11.00

11.50

1172.71

1.47

86.00

Sedimentary Rocks

Quartz sandstone

SED19

54.85 ± 2.10

61.26 ± 6.38

6070.75 ± 39.50

ND

315.50

Greywacke

SED20

7.65 ± 1.12

9.48 ± 1.16

1366.27 ± 21.60

4.00 ± 0.62

66.24

Shale

SED21

10.00 ± 1.13

8.00 ± 1.55

1216.20 ± 20.70

2.87 ± 0.60

60.13

SED22

6.00 ± 1.23

7.47 ± 1.05

664.68 ± 17.30

2.34 ± 0.57

35.00

SED23

10.67 ± 1.35

11.36 ± 1.34

644.40 ± 17.70

ND

38.66

SED24

10.20 ± 1.30

10.55 ± 1.46

964.78 ± 19.60

2.30 ± 0.55

51.33

SED25

7.78 ± 1.37

7.12 ± 1.16

968.84 ± 19.30

ND

48.30

SED26

8.58 ± 1.10

10.71 ± 2.14

110.00 ± 13.00

0.84 ± 0.35

15.02

SED27

5.58 ± 1.34

5.15 ± 1.33

136.26 ± 14.80

2.00 ± 0.57

11.37

SED28

8.03 ± 1.27

7.90 ± 1.43

340.25 ± 15.53

1.30 ± 0.47

22.66

SED29

5.23 ± 1.08

7.38 ± 1.82

401.08 ± 16.30

1.95 ± 0.53

23.60

SED30

10.00 ± 1.06

11.86 ± 1.55

693.07 ± 18.50

1.57 ± 0.46

40.67

Range

5.23 - 54.85

5.15 - 61.26

110.00 - 6070.75

0.84 - 4.00

11.37 - 315.50

Average

12.04

13.18

1131.36

1.60

60.70

(UNSCEAR, 2008)

50

50

500

84