Tag Archives: lava flows

THEMIS: Cyane Fossae on Alba Mons

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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HiRISE: Dune footprints in Hellas Planitia

These curious chevron shapes in southeast Hellas Planitia are the result of a complex story of dunes, lava, and wind. Long ago, there were large crescent-shaped (barchan) dunes that moved across this area, and at some point, there was an … Continue reading

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THEMIS: Summit caldera of Arsia Mons

THEMIS Image of the Day, June 10, 2019. Today’s VIS image shows part of the summit caldera of Arsia Mons. Arsia Mons is the southernmost of the three large Tharsis volcanoes. Extensive lava plains originated from eruptions of this volcano. … Continue reading

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HiRISE: The floor of a crater in the Phlegra region

The floor of a crater in the Phlegra region. The objective of this observation is to examine this crater floor that not only cracks in it, but also what looks like lava piled up in one area. HiRISE Picture of … Continue reading

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HiRISE: Resistant lava and erosion

This image demonstrates the curious phenomenon called “topographic inversion.” The southern half of the picture is covered by a well-preserved lava flow. The flow stops just at the brink of descending a steep slope. Lava isn’t afraid of falling, so … Continue reading

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HiRISE: Pits and flows

Pits and flows. This observation shows smooth-textured flows on the plateau south of the collapse pit chain of Ophir Catena. HiRISE Picture of the Day archive. [More at links]

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HiRISE: A ridge on the plains

A ridge on the plains. This ridge on rocky plains is located not to far from Daedalia Planum, a featureless plain with multiple lava flows and small craters. HiRISE Picture of the Day archive [More at links]

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THEMIS: Elysium Planitia in false color

THEMIS Image of the Day, March 26, 2019. Today’s false-color VIS image is located in Elysium Planitia. The linear depressions at the top of the image are created by tectonic faults, where the center block of material has dropped downward … Continue reading

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THEMIS: Tapestry in rock — Daedalia Planum

THEMIS Image of the Day, March 22, 2019. This VIS image shows a small portion of Daedalia Planum. The lava flows in this image originated at Arsia Mons. Individual flows have lengths up to almost 180 km (~111 miles). The … Continue reading

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THEMIS: Daedalia Planum lava flows

THEMIS Image of the Day, March 12, 2019. Today’s VIS image shows a small part of Daedalia Planum.(Note that sunlight in this image is coming from the right.) The lava flows originate from Arsia Mons, one of the large volcanoes … Continue reading

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