This study investigates the Late Quaternary sedimentary and volcanic history of Zélée and Geyser Seamounts, carbonate platforms in the Mozambique Channel of the southwest Indian Ocean. Situated in a region influenced by active tectonics, glacial-interglacial sea level cycles, and persistent volcanic activity from both local (Mayotte and Comoros Archipelago) and regional (Madagascar) sources, these seamounts exhibit complex sedimentary and geomorp [...]