Tag Archives: periglacial terrain

HiRISE: Dune maze craze

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

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

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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THEMIS: Glacial terrain in Moreux Crater

THEMIS Image of the Day, November 17, 2017. This image of Moreux Crater shows part of the central peak at the top of the frame, deposits of material from the crater rim at the bottom of the frame and sand … Continue reading

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THEMIS: Dunes on floor of Moreux Crater

THEMIS Image of the Day, November 16, 2017. This image of Moreux Crater shows part of the central peak and sand dunes on the crater floor surrounding the peak. The crater rim is at the bottom right of this image. … Continue reading

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THEMIS: Pits and dunes near central peak, Moreux Crater

THEMIS Image of the Day, November 15, 2017. This image of Moreux Crater shows part of the central peak and fields of sand dunes on the crater floor surrounding the peak. This image is just north of the previous image … Continue reading

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THEMIS: Pitted terrain and dunes in Moreux Crater

THEMIS Image of the Day, November 14, 2017. This image of Moreux Crater shows part of the central peak and fields of sand dunes on the crater floor surrounding the peak. The lower elevations of the peak are visible on … Continue reading

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