Table 3 Typical properties of some sedimentary rocks and their dependence with temperature

ϕ ₀

%

3 to 35

Mean value of approximately 15

ρ _dry

kg.m^-3

1,900 to 2,600

Mean value of approximately 2,300

b

1

0.65 to 0.80

Lavoux limestone

0.8 to 1.0

sandstone

$c_{\text{dry}}^{\sigma }$

J.kg^-1.K^-1

Approximately 800

Increase of approximately 15%

if T∈ [20; 250]°C

K _int

m²

10^-16 to 10^-9

High variability

λ _dry

W.m^-1.K^-1

0.5 to 6

Mean value of approximately 2;

decrease of approximately 25%

if T∈ [20;250]°C

α ₀

10^-5 K^-1

1.3 to 1.5

Approximately constant if T∈ [50; 200]°C

E

GPa

10 to 92

Limestones (mean value of approximately 50)

2 to 39

Sandstones (mean value of approximately 15)

8 to 22

Schists (mean value of approximately 14)

ν

1

0.12 to 0.33

Limestones (mean value of approximately 0.25)

0.06 to 0.46

Sandstones (mean value of approximately 0.24)

0.03 to 0.18

Schists (mean value approximately 0.08)

Θ

µW.m^-3

0.3 to 1.8