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Early geochemical environment of Mars as determined from thermodynamics of phyllosilicates

Bibring, Jean-Pierre; Poulet, Francois; Chevrier, Vincent

Images of geomorphological features that seem to have been produced by the action of liquid water have been considered evidence for wet surface conditions on early Mars. Moreover, the recent identification of large deposits of phyllosilicates, associated with the ancient Noachian terrains suggests long-timescale weathering of the primary basaltic …