Tag Archives: Tharsis

HiRISE: The Niagara Falls of Mars

Various researchers are often pre-occupied with the quest for flowing water on Mars. However, in this image, we see one of many examples from Mars where lava (when it was molten) behaved in a similar fashion to liquid water. In … Continue reading

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HiRISE: A volcanic fissure

Although Mars is known for having the largest volcano in our Solar System, Olympus Mons, we also find small-scale volcanic features on its surface. This fissure, less than 500 meters across at its widest point, lies in the Tharsis region … Continue reading

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Arsia Mons turned off its volcanic activity about 50 million years ago

New NASA research reveals that the giant Martian volcano Arsia Mons produced one new lava flow at its summit every 1 to 3 million years during the final peak of activity. The last volcanic activity there ceased about 50 million … Continue reading

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HiRISE: Consider the slope streak

Consider the slope streak; and his faded friend. (North is approximately down). Beautiful Mars series.

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HiRISE: Long and winding channel in Tharsis

The Tharsis region of Mars is covered in vast lava flows, many with channels. Some channels, however, resemble features that may have been formed by water. In this image, we see a smooth, flat-bottomed channel within the roughly irregular edges … Continue reading

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THEMIS: Lava flows near Ascraeus Mons

THEMIS Image of the Day, August 24, 2016. Today’s VIS image shows a very small portion of the extensive lava flows of the Tharsis volcanic complex. These flows are located southeast of Ascraeus Mons. More THEMIS Images of the Day … Continue reading

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THEMIS: Scarp at edge of Olympus Mons

THEMIS Image of the Day, July 18, 2016. Today’s VIS image covers part of Olympus Rupes, the steep escarpment at the edge of Olympus Mons. The left side of the image is the flank of the volcano, the right side … Continue reading

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THEMIS: Volcanic flows meet craters

THEMIS Image of the Day, July 12, 2016. This VIS image shows a small portion of the extensive lava flows of the Tharsis volcanic region. Note that the flows have encircled the two craters, covering the ejecta deposits, but not … Continue reading

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THEMIS: Olympica Fossae

THEMIS Image of the Day, May 25, 2016. Today’s image shows part of Olympica Fossae. The large depression in the bottom half of the image is part of the fossae itself, and is probably a graben. Graben are formed when … Continue reading

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Great tilt gave Mars a new face

The surface of the planet Mars tilted by 20 to 25 degrees 3 to 3.5 billion years ago. This was caused by a massive volcanic structure, the Tharsis volcanic dome, which is the largest in the Solar System. Because of … Continue reading

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