Tag Archives: volcanics

THEMIS: Lava levees on Ascraeus Mons’ upper slopes

THEMIS Image of the Day, August 31, 2017. This image of the flank of Ascraeus Mons shows several individual flows where the sides are higher than the center. These are called leveed flows, as the outer margin acts as a … Continue reading

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THEMIS: Into the caldera atop Ascraeus Mons

THEMIS Image of the Day, August 30, 2017. This image shows part of the complex caldera at the summit of the volcano. Calderas are found at the tops of volcanoes and are the source region for magma that rises from … Continue reading

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THEMIS: Flows and faults on Ascraeus Mons

THEMIS Image of the Day, August 29, 2017. Looking again at the southeastern flank of the volcano the narrow nature of the flows are visible. Given the steep sides of the volcano, flows from the summit run as narrow “rivers” … Continue reading

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THEMIS: Lava levees on Ascraeus Mons

THEMIS Image of the Day, August 28, 2017. This image shows part of the southeastern flank of Ascraeus Mons. The narrow flows of the volcano dominate the top of the image — note the raised levees flanking the channels — … Continue reading

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THEMIS: Flow fronts, crater rims in Utopia Planitia

THEMIS Image of the Day, July 3, 2017. Do you see what I see? Is that a face staring out at me? (THEMIS Art #138) More THEMIS Images of the Day by geological topic.

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HiRISE; Exposed bedrock, Koval’sky impact basin

This image shows partially exposed bedrock within the Koval’sky impact basin, which is on the outskirts of the extensive lava field of Daedalia Planum. Daedalia Planum is located southwest of Arsia Mons, which may be the source responsible for filling … Continue reading

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THEMIS: Lava channel on Hecates Tholus

THEMIS Image of the Day, June 27, 2017. Do you see what I see? Is that a snake slithering down the image? (THEMIS Art #134) More THEMIS Images of the Day by geological topic.

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HiRISE: The Niagara Falls of Mars

Various researchers are often pre-occupied with the quest for flowing water on Mars. However, in this image, we see one of many examples from Mars where lava (when it was molten) behaved in a similar fashion to liquid water. In … Continue reading

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HiRISE: Utopia Planitia

Utopia Planitia, a name that literally means “plains of nowhere.” Beautiful Mars series.

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THEMIS: Channels across lava plains near Nirgal Vallis

THEMIS Image of the Day, June 22, 2017. Do you see what I do? Someone on Mars is smiling at me. (THEMIS Art #131) More THEMIS Images of the Day by geological topic.

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