Composition and structures of the subsurface in the vicinity of Valles Marineris as revealed by central uplifts of impact craters

► Image of the subsurface in the vicinity of Valles Marineris. ► No sulfates in the subsurface. ► Presence in depth of pre-Noachian pristine martian crust in eastern part of Valles Marineris. ► Highlight of thick Noachian volcanic accumulation in the western part of Valles Marineris. ► Highlight of a deep subvertical geologic discontinuity below the Tharsis lava plateau.