Tag Archives: Marte Vallis

THEMIS: Marte Vallis

THEMIS Image of the Day, August 20, 2014. The streamlined islands in this VIS image are part of Marte Vallis. More THEMIS Images of the Day by geological topic.

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HiRISE image: Chevrons on a Marte Vallis lava flow

Lava flows cool as they move allowing their surface to freeze solid. The constant movement below this surface can break it up into a rough mass of jumbled broken rock. Sometimes larger surface areas that are thicker can behave like … Continue reading

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Subsurface radar profiles Marte Vallis outflow channel in 3D

Ground-penetrating radar on NASA’s Mars Reconnaissance Orbiter (MRO) reveals buried channels that show floods of water from Cerberus Fossae eroded Marte Vallis in two distinct stages, and they did so to a much greater extent than is visible today. The … Continue reading

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