Classification of geothermal systems in Madagascar

Geothermal Energy

Science – Society – Technology

Table 2 Geological and tectonic controls for prospective areas in Madagascar

Region	North		Central		West
Area	Ambilobe	Ambanja	Itasy	Antsirabe	Miandrivazo	Morondava
Tectono-metamorphic domain	Bemarivo		Antananarivo		Ikalamavony	Morondava basin
Plate tectonic setting or geologic system	Sedimentary/basement normal fault boundary	Intracontinental rift			Sedimentary/basement normal fault boundary	Sedimentary passive margin basin with horst and graben structures
Plate tectonic setting or geologic system	Sedimentary/basement normal fault boundary	Graben	Pull-apart basin	Half-graben	Sedimentary/basement normal fault boundary
Geothermal play type	Extensional domain
Dominant geologic control	Faults/fractures
Heat source	Shallow Moho	Shallow Moho and fossil magma chamber			Shallow Moho
Selected references	Tucker et al. (2014) Rossi (1980) Lardeaux et al. (1999) Estrade (2014) Cucciniello et al. (2016)	Andrianaivo and Ramasiarinoro (2010a, b) Hochstein (1988) Reed (1983) Rasoanimanana et al. (2012) Rufer (2009)			Razafimbelo (1987) Reeves (2014) Rajaomazava (1992) Rindraharisaona et al. (2017) Piqué et al. (1999a, b)