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Table 1 Emplacement conditions of magma chamber and geological properties for thermal models of the Los Azufres geothermal field (LAGF)
Physical property (units) | Emplacement of magma chamber |
|---|---|
Emplacement conditions | |
Depth of the top the chamber (d) (km) | 5.0-9.0 |
Depth of the chamber centroid (dc) (km) | 7.000 to 12.875 |
Volume (V) (km3) | 300 to 600 |
Thickness of the magma chamber (E) (km) | 4.00 to 7.75 |
Radius (r) (km) | 5.0 |
Magma emplacement temperature (Tcham) (°C) | 1,350 |
Boundary conditions | |
Surface temperature (Ts) (°C) | 25 |
Geothermal gradient (ΔTg) (°C/km) | 30 |
Geological strata (strata 1–4 rock type)a | |
Granite-granodiorite | |
Width (km) | 16.00 |
Thermal conductivity (W/mK) | 2.80 |
Specific heat (J/kg K) | 1,073 |
Density (kg/m3) | 2,680 |
Metamorphic rocks | |
Width (km) | 1.00 |
Thermal conductivity (W/mK) | 2.73 |
Specific heat (J/kg K) | 1,050 |
Density (kg/m3) | 2,280 |
Andesite | |
Width (km) | 2.75 |
Thermal conductivity (W/mK) | 1.72 |
Specific heat (J/kg K) | 1,151 |
Density (kg/m3) | 2,180 |
Rhyolite | |
Width (km) | 0.25 |
Thermal conductivity (W/mK) | 3.44 |
Specific heat (J/kg K) | 1,074 |
Density (kg/m3) | 2,460 |