Characterization of an exhumed high-temperature hydrothermal system and its application for deep geothermal exploration: An example from Terre-de-Haut Island (Guadeloupe archipelago, Lesser Antilles volcanic arc)

We present integrated structural, petrological, mineralogical and geochemical investigations conducted on an exhumed hydrothermal system identified in Terre-de-Haut Island (Guadeloupe archipelago). This work demonstrates, for the first time, occurrence of ductile shear zones, marked by development spaced schistosity planes generated pressure-solution processes. unravel that is coeval with high-temperature hydrothermalism (approximately 350 °C) second this alteration occurred at a depth less than 2 km. highlight, shallow crustal depths, record both vertical lateral fluid pathways studied volcanic arc. Finally, combining new dataset large number published surface data obtained active geothermal Bouillante, we propose conceptual scheme fossil reservoir to document roots magmatic arc-related systems introduce perspectives deep exploration.