CRISM: Polyhydrates, sulfates, gypsum, and Fe silicates at a Sisyphi Montes dome

7AE6The Sisyphi Montes are a series of large semicircular mountains in Sisyphi Planum, a volcanic province on Mars located between the south polar terrains, Argyre, and Hellas basins. In this CRISM scene we observe polyhydrated sulfates (magenta), gypsum (blue), and crystalline Fe silicates (white/green) surrounding the top of a dome in the Sisyphi Montes. These findings strongly suggest that the volcanoes in the Sisyphi Montes were formed subglacially. Subglacial eruptions are highly habitable environments with good biosignature preservation potential… [More at link]

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