Tag Archives: basaltic sand

HiRISE: Windblown sand in Ganges Chasma

Dark, windblown sand covers intricate sedimentary rock layers in this image from Ganges Chasma, a canyon in the Valles Marineris system. These features are at once familiar and unusual to those familiar with Earth’s beaches and deserts. Most sand dunes … Continue reading

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THEMIS: Matara Crater’s sand dunes

THEMIS Image of the Day, April 20, 2017. Today’s false color image shows the sand sheet with surface dune forms on the floor of Matara Crater in Noachis Terra. Blue false color suggests basaltic sand, and Matara Crater is one … Continue reading

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THEMIS: Terra Cimmeria’s sand traps

THEMIS Image of the Day, March 10, 2017. This infrared image covers a large swath of Terra Cimmeria, including numerous craters with dunes and dune fields on their floors, as well as dunes located on the plains between craters. Dunes … Continue reading

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THEMIS: Sands of Gale Crater

THEMIS Image of the Day, February 15, 2017. Today’s false color image shows part of Gale Crater. Basaltic sands are dark blue in this type of false color combination. The Curiosity Rover is located in another portion of Gale Crater, … Continue reading

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THEMIS: Basaltic sands in Argyre hills

THEMIS Image of the Day, February 7, 2017. Today’s false color image shows several areas of dunes and sand sheets with dune forms between the numerous hills in this region west of Argyre Planitia. Basaltic sand appears dark blue in … Continue reading

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HiRISE: Changing dunes of Wirtz Crater

The large dark feature is a classic Martian sand dune. Most sand on Earth is made from the mineral quartz, which is white and bright. On Mars, most sand is composed of dark basalt, a volcanic rock. For this reason, … Continue reading

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THEMIS: Gale Crater mound’s northern side

THEMIS Image of the Day, January 20, 2017. Today’s false color image shows part of the floor of Gale Crater and the northern side of Mt. Sharp (Aeolis Mons). The blue-colored areas on the crater floor are likely dunes made … Continue reading

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THEMIS: Basaltic dunes in Danielson Crater

THEMIS Image of the Day, December 26, 2016. Today’s false color image shows part of Danielson Crater. The dark blue features at the bottom of the image are sand dunes on the floor of the crater. The THEMIS VIS camera … Continue reading

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THEMIS: Part of Gale Crater in false color

THEMIS Image of the Day, December 19, 2016. Today’s false color image shows part of Gale Crater. The Curiosity Rover is located off this image to the west. The blue areas are probably covered with basaltic sand. The THEMIS VIS … Continue reading

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THEMIS: Dune field in Dulovo Crater

THEMIS Image of the Day, November 25, 2016. Today’s false color image shows the dunes on the floor of Dulovo Crater. The blue tint indicates that the sand grains are particles of basaltic rock. The THEMIS VIS camera contains 5 … Continue reading

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