Structure and nature of the Palaeozoic basement based on magnetic, gravimetric and seismic investigations in the central Upper Rhinegraben

Geothermal Energy

Science – Society – Technology

Table 1 Petrophysical parameters used for modelling of the temperatures

	Rock type	Porosity (%)	Heat production (μW/m³)	Thermal conductivity (W/mK)
GrCFN	CF Nord granites	0.35^e	2.53^a	2.8^d
GdS	South CF granodiorites	0.35^e	3.23–3.68^a	2.83^c
SVS	Steige-Villé schists	Negligible	2.5^e	3.03^f
GBFW	W Black Forest granite	0.35^e	3.16^a	2.85^f
GOb	Oberkirch granite	0.35^e	3.16^a	2.85^f
IntCr	Intermediate crust-gneiss?	Negligible	1.04^g	2.1^b
LowCr	Felsique lower crust	Negligible	5.0^e	2.1^b
Sediments Ter	Tertiary sediments	15^d	1.4^d	1.4^d
Sédiments Mez	Mesozoic sédiments	15^d	1.4^f	2.5^d

Mantel flux: 0.050 W/m²; surface température: 10 °C; fluid thermal conductivity: 0.6 W/m/K
^aTabaud et al. (2014)
^bRay et al. (2007)
^cWang et al. (2016)
^dGuillou-Frottier et al. (2013)
^eForster and Forster (2000)
^fCorreia (2015)
^gVilà et al. (2010)