Tag Archives: volcanics

THEMIS: Ascraeus Mons flank and lava plains

Posted on August 1, 2019 by rburnham

THEMIS Image of the Day, August 1, 2019. This VIS image is located where the southeastern flank of Ascraeus Mons meets the surrounding volcanic plains. Ascraeus Mons is the northernmost of the three large Tharsis volcanoes. Explore more THEMIS Images … Continue reading →

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THEMIS: Elysium Chasma

Posted on July 30, 2019 by rburnham

THEMIS Image of the Day, July 30, 2019. This fracture system is called Elysium Chasma. Located west of Elysium Mons, it is just one of many large fractures in the Elysium volcanic complex. Explore more THEMIS Images of the Day … Continue reading →

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Daedalia Planum flows combine dusty surfaces and exposed lava outcrops

Posted on July 29, 2019 by rburnham

[Editor’s note: From a paper by Christine Simurda and two co-authors recently published in the Journal of Geophysical Research.] The Unusual Thermophysical and Surface Properties of the Daedalia Planum Lava Flows • Unusual thermophysical variations are present on lava flows … Continue reading →

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THEMIS: Graben in Elysium Fossae

Posted on July 29, 2019 by rburnham

THEMIS Image of the Day, July 29, 2019. Today’s VIS image shows a section of one of the graben that comprise Elysium Fossae. Graben are formed during tectonic activity, where blocks of material slide down between paired faults. Graben are … Continue reading →

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HiRISE: This far and no further!

Posted on July 12, 2019 by rburnham

This far and no further! The very top of this image shows the edge of ancient lava flow that went no further across the plain. It’s also a natural boundary in the reflectivity (albedo) of the surface. HiRISE Picture of … Continue reading →

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THEMIS: Edge of the caldera on Ascraeus Mons

Posted on July 12, 2019 by rburnham

THEMIS Image of the Day, July 12, 2019. Today’s VIS image is located on the summit of Ascraeus Mons, one of the three large Tharsis region volcanoes. This image clips just the edge of the large summit caldera. Explore more … Continue reading →

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HiRISE: Terraced trough near Ceraunius Fossae

Posted on July 11, 2019 by rburnham

A terraced trough near Ceraunius Fossae. This may be a source region of flow material that enclosed the adjacent raised ridges and continues on to the north. High resolution can help to determine if the terraced forms are due to … Continue reading →

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THEMIS: Arsia Mons faults, graben, and pit craters

Posted on July 1, 2019 by rburnham

THEMIS Image of the Day, July 1, 2019. Today’s VIS image is located on the lower flank of Arsia Mons. The linear features are tectonic faults. The lava flows originating from Arsia Mons are among the youngest on the surface … Continue reading →

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THEMIS: Tharsis Tholus volcano flank

Posted on June 28, 2019 by rburnham

THEMIS Image of the Day, June 28, 2019. This VIS image is located on the flank of Tharsis Tholus. The Tharsis region of Mars is dominated by large volcanoes and extensive lava plains. Explore more THEMIS Images of the Day … Continue reading →

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THEMIS: Cyane Fossae on Alba Mons

Posted on June 21, 2019 by rburnham

THEMIS Image of the Day, June 21, 2019. This VIS image shows lava flows from Alba Mons, and a tectonic graben called Cyane Fossae. It is thought that the linear depressions that surround Alba Mons were created by a huge … Continue reading →

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