Tag Archives: volcanics

HiRISE: Young lava flows

This image shows remarkably young lava flows in Elysium Planitia. There are almost no impact craters over this flow, indicating that it is probably only a few million years old—practically an infant in geologic time. [More at link]

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HiRISE: Terrain immediately south of Arsia Mons

Terrain immediately south of Arsia Mons. This terrain is probably due to ancient volcanic activity. Beautiful Mars series.

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HRSC: Mars impact crater or supervolcano?

These images from [the High Resolution Stereo Camera on] ESA’s Mars Express show a crater named Ismenia Patera on the Red Planet. Its origin remains uncertain: did a meteorite smash into the surface or could it be the remnants of … Continue reading

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THEMIS: Channels cutting across channels in Olympica Fossae

THEMIS Image of the Day, April 12, 2018. Olympica Fossae is a complex channel located on the volcanic plains between Alba Mons and Olympus Mons. The sinuosity of the large channel in the middle of the image indicates that this … Continue reading

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THEMIS: A peppering of small craters

THEMIS Image of the Day, April 4, 2018. This field of small dark craters is located in southern Elysium Planitia. The dark appearance against the surrounding lava flows suggests that the craters post-date the lava flows. The small “tails” near … Continue reading

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THEMIS: Cracked lava plates in Avernus Colles

THEMIS Image of the Day, April 3, 2018. The arcuate fractures and broken up surface shown in this image is called Avernus Colles. This unique surface has developed on the southeast margin of Elysium Plainitia. More THEMIS Images of the … Continue reading

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THEMIS: Channels in Granicus Valles

THEMIS Image of the Day, April 2, 2018. This VIS image shows a section of Granicus Valles, one of several channel systems that originate near the western margin of the Elysium Mons volcanic complex. More THEMIS Images of the Day … Continue reading

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THEMIS: Granicus Valles, channel in Elysium

THEMIS Image of the Day, March 28, 2018. This VIS image shows a section of Granicus Valles. Granicus Valles is one of several channel systems the originate near Elysium Mons. More THEMIS Images of the Day by geological topic.

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HiRISE: Polygonal ridges near the Medusae Fossae formation

Polygonal ridges near the Medusae Fossae formation. The major hypothesis for these ridges is that they are basaltic, made from intruding lavas. Beautiful Mars series.

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HiRISE: Getting from here to there in Utopia Planitia

Getting from here to there in Utopia Planitia. Is this a wrinkle ridge or a flow margin? Knowing will help in the study of regional tectonics here. Beautiful Mars series.

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