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 | Liquid-dominated | |||||
| Fluid enthalpy | 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 | ||