Table 4 Geothermal system classes for prospective areas in Madagascar
Region | North | Central | West | |||
|---|---|---|---|---|---|---|
Area | Ambilobe | Ambanja | Itasy | Antsirabe | Miandrivazo | Morondava |
Geological environment and heat source | Graben border-fault Shallow Moho | Graben Shallow Moho and fossil magma chamber | Volcanic Shallow Moho and fossil magma chamber | Graben border-fault Shallow Moho | Sedimentary Shallow Moho | |
Physical state of the mobile fluid phase | Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Liquid-dominated | |||||
Fluid enthalpy | Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Moderate | Low | ||||
Class | Graben border-fault liquid-dominated moderate-temperature | Fossil-magmatic liquid-dominated moderate-temperature | Graben bounder-fault liquid-dominated moderate-temperature | Sedimentary liquid-dominated low-temperature | ||