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Table 3 Heat-producing elements, density and radiogenic heat production statistics of the main lithologies in Kuujjuaq

From: Thermophysical properties of surficial rocks: a tool to characterize geothermal resources of remote northern regions

 

UGRS

UICP-MS

ThGRS

ThICP-MS

KGRS

KICP-MS

AGRS

AICP-MS

ρ

(mg kg−1)

(mg kg−1)

(%)

(× 10−6 W m−3)

(kg m−3)

Paragneiss (n = 4)

n = 8

 Arithmetic mean

1.50

0.93

3.75

3.38

0.50

1.44

0.70

0.64

2721

 Standard deviation

1.27

0.66

3.36

2.92

0.45

0.34

0.59

0.32

118.36

 Median

1.30

0.88

3.10

2.82

0.47

1.39

0.62

0.67

2711

 Min–max

0.40–3.00

0.25–1.71

0.60–8.20

0.79–7.08

0.04–1.02

1.11–1.86

0.15–1.41

0.30–0.94

2464–2879

Diorite–gabbro (n = 5)

n = 9

 Arithmetic mean

0.38

0.75

1.94

6.29

0.47

1.62

0.27

0.79

2752

 Standard deviation

0.18

0.50

1.96

7.18

0.79

0.98

0.24

0.64

166.58

 Median

0.40

0.75

1.50

2.21

0.12

1.63

0.23

0.63

2700

 Min–max

0.20–0.60

0.21–1.36

0.40–5.20

0.61–16.7

0.03–1.86

0.15–2.82

0.09–0.66

0.16–1.67

2571–3108

Tonalite–granite (n = 5)

n = 6

 Arithmetic mean

1.30

1.07

1.82

6.43

0.88

3.32

0.51

1.03

2565

 Standard deviation

1.73

1.02

1.64

11.04

0.62

3.15

0.48

0.85

40.03

 Median

0.60

0.63

1.50

0.87

0.79

3.14

0.31

1.03

2573

 Min–max

0.20–4.30

0.19–2.61

0.40–4.60

0.34–26.00

0.04–1.74

0.66–8.47

0.11–1.29

0.23–2.39

2505–2626

  1. A radiogenic heat production, ρ density