Skip to main content

Science – Society – Technology

Geothermal Energy Cover Image

Table 1 Densities, magnetic susceptibilities and thermal properties (specific heat capacity, thermal conductivity and radiogenic heat production) of the layers within the Moss area used during the 2D density, magnetic and thermal modelling (k r is the thermal conductivity at room temperature)

From: 2D structural and thermal models in southeastern Norway based on the recently drilled Årvollskogen borehole and 2D density, magnetic and thermal modelling

Layer of the 2D structural model Density ρ (kg/m3) Magnetic susceptibility χm(SI) Thermal conductivity scale value kr(W/mK) Specific heat capacity Cp(J/kgK) Radiogenic heat production S (μW/m3)
Gabbro 2950 0.03-0.09 2.90 780 0.4
Pyroxenite 3100 0.07 4.00 780 0.4
Amphibolite and metagabbro 2850-3050 0.001-0.06 2.90 790 1.2
Granitic to quartzdioritic gneiss 2654-2683 0.00003-0.0095 3.00 800 4.4
Granitic augen gneiss 2640-2695 0.0001-0.01 3.05 800 2.7
Mica gneiss 2645-2670 0.0007-0.008 3.05 800 2.1
Upper/middle crystalline crust 2740 0.001 3.10 930 1.6
Lower/middle crystalline crust 2830 0.001 3.20 1050 0.7
High-density crust 2940 0.003 3.10 1050 0.3
High-density lower crustal layer 3056 0.006 2.85 1100 0.25
Lithospheric upper mantle 3222 - 4.79 1200 0.03