Tag Archives: periglacial processes

HiRISE: Dune maze craze

Posted on January 9, 2018 by rburnham

Dune maze craze. This image shows sand dunes on the northern plains in the spring, when the seasonal frost is sublimating (and making crazy patterns). The dunes have coalesced here into an interlocking maze. Polygons between the dunes are due … Continue reading →

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HiRISE: Depressions and channels on the floor of Lyot Crater

Posted on December 14, 2017 by rburnham

Lyot Crater (220-kilometers in diameter) is located in the Northern lowlands of Mars. The crater’s floor marks the lowest elevation in the Northern Hemisphere. On the crater’s floor, we see a network of channels connecting a series of irregular shaped … Continue reading →

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Creepy stuff: possible solifluction on Mars

Posted on November 30, 2017 by rburnham

Planetary Geomorphology Image of the Month, November 30, 2017: Andreas Johnsson (University of Gothenburg, Sweden). Small-scale lobes on Mars (Fig. 1) are tens to hundreds of meters wide and consist of an arcuate frontal riser that is a meter to … Continue reading →

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HiRISE: A collapsed crater rim

Posted on November 27, 2017 by rburnham

The eastern rim of this small 3.5-kilometer crater appears to have collapsed into a much larger crater (about 14-kilometers wide). The larger crater has a large ice flow around its central peak, and is non-circular, with large blocks further suggesting … Continue reading →

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HiRISE: Pits in the south polar layered deposits

Posted on November 3, 2017 by rburnham

Pits in the south polar layered deposits. Beautiful Mars series.

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HiRISE: Light and dark in Ultimi Scopuli

Posted on November 2, 2017 by rburnham

Light and dark in Ultimi Scopuli. Beautiful Mars series.

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HiRISE: Pits and cracks along a crater wall

Posted on September 13, 2017 by rburnham

Pits and cracks along a crater wall — February 2017, approximately 303 km above the surface. Beautiful Mars series.

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HiRISE: Raised and banded curbed feature in a Tantalus Fossae crater

Posted on August 28, 2017 by rburnham

Raised and banded curbed feature in a Tantalus Fossae crater. Beautiful Mars series.

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THEMIS: Winding ridges & ‘basketball terrain’ in Arcadia Planitia

Posted on June 23, 2017 by rburnham

THEMIS Image of the Day, June 23, 2017. Do you see what I see? Make a wish and then break the wishbone! (THEMIS Art #132) More THEMIS Images of the Day by geological topic.

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HiRISE: Periglacial terrain & dust devil tracks

Posted on December 6, 2016 by rburnham

Periglacial terrain. Beautiful Mars series.

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