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Wide distribution and glacial origin of polar gypsum on Mars

Le Mouélic, S.; Spiga, A.; Le Deit, L. +3 more

The North Polar Cap of Mars is associated with different kinds of superficial sediments, including the Circumpolar Dune Field, interior dune fields and sedimentary veneers scattered over the ice cap. In order to resolve the mineralogical composition and the regional distribution of these sediments, we processed OMEGA and CRISM hyperspectral data w…

Ancient volcanism and its implication for thermal evolution of Mars

Huang, Jun; Xiao, Long; Greeley, Ronald +4 more

Volcanism plays an important role in the formation and thermal evolution of the crusts of all terrestrial planets. Martian volcanoes have been extensively studied, and it has been suggested that the volcanism on Mars that created the visible volcanic features was initiated in the Noachian (> 3.8 Ga) and continued to the Late Amazonian (< 0.1…