Tag Archives: pit craters

THEMIS: Flank of Albor Tholus volcano

THEMIS Image of the Day, August 6, 2019. Today’s VIS image shows a portion of the flank of Albor Tholus, a volcano found in the Elysium volcanic complex. The pits and cracks may have formed when the volcano’s flank responded … Continue reading

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THEMIS: Arsia Mons faults, graben, and pit craters

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: Graben and pits in Sirenum Fossae

THEMIS Image of the Day, November 20, 2018. This VIS image is located in Sirenum Fossae near Daedalia Planum. The arc at the bottom of the image is the rim of a crater that was dissected when the tectonic event … Continue reading

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THEMIS: Pit chains and craters on Ascraeus Mons

THEMIS Image of the Day, November 7, 2018. The linear features in this VIS image are located on part of the large flow feature on the southern flank of Ascraeus Mons. The features most likely formed by collapse of the … Continue reading

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HiRISE: The pits of Elysium Mons

During the 2018 Mars dust storm, we obtained a clear view of the summit of the giant volcano Elysium Mons. We see the western rim and floor of the caldera, and a chain of pits (called a “catena”) extending from … Continue reading

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THEMIS: Pits and channels on Ascraeus Mons

THEMIS Image of the Day, August 28, 2018. This VIS image shows a portion of the northern flank of Ascreaus Mons. Multiple linear depressions cut across the surface lava flows, having formed after the surface in this region. The chains … Continue reading

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THEMIS: Lava channels on Pavonis Mons

THEMIS Image of the Day, August 24, 2018. This VIS image shows part of the southwestern flank of Pavonis Mons. The channel and nearby oval depressions are both related to the flow of lava. Narrow lava flows can create channels. … Continue reading

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THEMIS: Pavonis Mons flank meets volcanic plains

THEMIS Image of the Day, July 4, 2018. Today’s VIS image is of the eastern flank of Pavonis Mons where the volcano meets the surrounding volcanic plains. The arced features towards the top of the image are fractures and lava … Continue reading

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THEMIS: Volcanic fissure in Labeatis Fossae

THEMIS Image of the Day, May 8, 2018. The feature that crosses this VIS image is a graben. Graben are formed by tectonic action, where a block of material moves downward between a pair of faults. The northern part 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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