Tag Archives: volcanics

THEMIS: Volcanic vent in Arsia Mons caldera

THEMIS Image of the Day, January 5, 2018. This THEMIS image shows part of the southern margin of the summit caldera. This image contains a variety of features representing the major events related to the formation of the volcano. At … Continue reading

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THEMIS: Chains of pit craters near summit of Arsia Mons volcano

THEMIS Image of the Day, January 4, 2018. The three large aligned Tharsis volcanoes are Arsia Mons, Pavonis Mons and Ascraeus Mons (from south to north). There are collapse features on all three volcanoes, on the southwestern and northeastern flanks. … Continue reading

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THEMIS: Pits at caldera’s edge

THEMIS Image of the Day, January 3, 2018. This THEMIS image shows part of the caldera floor of Arsia Mons. It is not uncommon for calderas to have “flat” floors after the final explosive eruption the empties the subsurface magma … Continue reading

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THEMIS: Flows on the caldera floor of Arsia Mons

THEMIS Image of the Day, January 2, 2018. This THEMIS image shows part of the caldera floor of Arsia Mons. It is not uncommon for calderas to have “flat” floors after the final explosive eruption the empties the subsurface magma … Continue reading

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THEMIS: Arsia Mons’ collapse pits

THEMIS Image of the Day, January 1, 2018. This VIS image shows part of the northeastern flank of Arsia Mons at the summit caldera. In this region the summit caldera does not have a steep margin most likely due to … Continue reading

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HiRISE: Circular lava structure in Elysium Planitia

A circular structure in lava in southwestern Elysium Planitia. Beautiful Mars series.

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THEMIS: Morning sunlight on Pavonis Mons caldera

THEMIS Image of the Day, November 10, 2017. This image shows the central part of the smaller summit caldera on Pavonis Mons. On the top side of the caldera is a complex region of fault related collapse of the wall … Continue reading

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THEMIS: High-volume lava tube, Pavonis Mons

THEMIS Image of the Day, November 9, 2017. This image shows the southern flank of Pavonis Mons. The large sinuous channel at the bottom of the image is located at the uppermost part of the volcano where collapse features are … Continue reading

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THEMIS: Faults weaken summit caldera wall on Pavonis Mons

THEMIS Image of the Day, November 8, 2017. This image shows the western part of the smaller summit caldera on Pavonis Mons. On this side of the caldera is a complex region of fault related collapse of the wall of … Continue reading

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THEMIS: Summit caldera of Pavonis Mons

THEMIS Image of the Day, November 7, 2017. This image shows part of the smaller summit caldera on Pavonis Mons. This caldera is approximately 5km deep. Near the bottom of the image is a region where part of the caldera … Continue reading

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