Tag Archives: basaltic sand

HiRISE: Dust and frost

Sand dunes in the north polar regions of Mars show light coatings of pale orange dust blown partially across the dark basaltic sand. Around the edges of the dunes, patches of seasonal dry ice remain. These patches will be gone … Continue reading

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THEMIS: Basaltic sand dunes in Arabia Terra crater

THEMIS Image of the Day, May 3, 2018. A group of dunes is visible on the floor of this unnamed crater in Arabia Terra. The dunes contain basaltic sand, which is darker than the dust covered materials of the rest … Continue reading

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HiRISE: The moving sands of Lobo Vallis

Bright ripples line the topography in this region, formed within a past climate. Dark dunes and sand streaks (composed of basaltic sand) have moved and filled lower areas, pushed by more recent winds from the top towards the bottom of … Continue reading

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HiRISE: Mid-latitude crater with a spot in the middle

A mid-latitude crater with a spot in the middle. From orbit, the spot looks black, but we can see in the enhanced color closeup that it’s darker (basaltic?) material on top of the lighter dunes. Beautiful Mars series.

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THEMIS: Basaltic dunes and frost in north polar lowlands

THEMIS Image of the Day, September 19, 2017. Siton Undae is a large dune field located in the northern plains near Escorial Crater. Siton Undae is west of the crater and is one of three dune fields near the crater. … Continue reading

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THEMIS: Basaltic sands in Russell Crater dune ridge

THEMIS Image of the Day, August 11, 2017. This image shows the western part of the dune field on the floor of Russell Crater. This is a false color image of Russell crater and it’s surroundings. Sand dunes usually appear … Continue reading

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HiRISE: The White Cliffs of ‘Rover’

This image reminds us of the rugged and open terrain of a stark shore-line, perhaps of an island nation, such as the British Isles. A close-up in enhanced color produces a striking effect, giving the impression of a cloud-covered cliff … Continue reading

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THEMIS: False color dunes in Noachis Terra

THEMIS Image of the Day, May 22, 2017. Today’s false color image shows dunes on the floor of an unnamed crater in Noachis Terra. The blue false-color tint suggests the dunes are made of basaltic sand. The THEMIS VIS camera … Continue reading

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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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