Tag Archives: Tharsis

HiRISE: Me and my little friend

Me and my little friend. A very interesting-looking 5-kilometer crater located in Ascraeus Mons, a large shield volcano located in the Tharsis region of the planet Mars. It is the northernmost and tallest of three shield volcanoes collectively known as … Continue reading

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THEMIS: Lava flow fronts in Daedalia Planum

THEMIS Image of the Day, December 26, 2018. Today’s VIS image shows a small portion of the immense lava flows that originated from Arsia Mons. Arsia Mons is the southernmost of the three large aligned volcanoes in the Tharsis region. … Continue reading

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THEMIS: Tectonics and volcanism in Syria Planum

THEMIS Image of the Day, December 4, 2018. This VIS image shows a linear depression in Syria Planum. Volcanic activity, including broad shield volcanoes and extensive volcanic plains created this region of the Tharsis system south of Noctis Labyrinthus. Linear … Continue reading

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Mantle plumes still active under Tharsis, Elysium?

[Editor’s note: From a paper by A.-C. Plesa and eight co-authors recently published in Geophysical Research Letters.] The thermal state and interior structure of Mars We constrain the thermal state and interior structure of Mars by combining a large number … Continue reading

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HiRISE: Pitted material and mounds

Pitted material and mounds in Chryse Planitia. This rough-looking material has many meter-length pits. What exactly is this stuff? Chryse Planitia shows evidence of water erosion in the past, and is the bottom end for many outflow channels from the southern … Continue reading

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Olympus Mons and Ascraeus Mons: Geologically recent lava inflation

The summit of Olympus Mons displays lava flows, some of which are truncated by the caldera, that appear to have flowed uphill. Because lava flows downhill, this mismatch between the flow direction and present-day topography suggests that the terrain has … Continue reading

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THEMIS: High on the east flank of Pavonis Mons

THEMIS Image of the Day, October 11, 2018. This false-color VIS image shows the eastern flank of Pavonis Mons. The darker streaks are created by wind action, and the curving lines are faults produced when the volcano “relaxed” under the … Continue reading

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THEMIS: Intersecting lava channels & tectonics

THEMIS Image of the Day, August 27, 2018. The Tharsis region contains both large volcanoes and extensive lava plains. Most of the channel features in this region were formed by the flow of lava rather than the flow of water. … Continue reading

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THEMIS: Impact crater on volcanic plains

THEMIS Image of the Day, August 23, 2018. This VIS image shows an unnamed crater located northeast of Ascraeus Mons, on the volcanic plains of the Tharsis region. The rim has several concentric ridges. There are multiple layers of ejecta, … Continue reading

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HiRISE: Dusty lava flows

Dusty lava flows. Try not to get choked up.

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