Tag Archives: volcanics

HiRISE: It shrinks! It cracks!

Given enough time, impact craters on Mars tend to fill up with different materials. For instance, some craters on Mars had lakes inside them in the past. When these lakes dried out, they left behind traces of their past existence, … Continue reading

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THEMIS: Flows upon flows in Daedalia Planum

THEMIS Image of the Day, April 13, 2017. Today’s false color image shows a small portion of Daedalia Planum. This part of Mars is built up from countless interwoven lava flows that have spilled from the giant volcanos of Tharsis … Continue reading

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HiRISE: Cratered cones and ridges in Isidis Planitia

Cratered cones and ridges in Isidis Planitia. Beautiful Mars series.

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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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THEMIS: Tapestry of once-molten rock

THEMIS Image of the Day, March 1, 2017. This VIS image shows a portion of Daedalia Planum, an extensive volcanic plain comprised of flows from Arsia Mons. Different flow surface textures help delineate different flows. (This image was taken shortly … Continue reading

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Mars’ mantle more Earth-like than Moon-like

Mars’ mantle may be more complicated than previously thought. In a new study published [February 24] in the Nature-affiliated journal Scientific Reports, researchers at Louisiana State University document geochemical changes over time in the lava flows of Elysium, a major … Continue reading

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Two billion years’ volcanism recorded from a single Mars meteorite ejection site

Analysis of a Martian meteorite found in Africa in 2012 has uncovered evidence of at least 2 billion years of volcanic activity on Mars. This confirms that some of the longest-lived volcanoes in the solar system may be found on … Continue reading

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Everything you wanted to know about Martian scoria cones, but were afraid to ask…

Planetary Geomorphology Image of the Month, January 30, 2017: Petr Brož (Institute of Geophysics, Czech Academy of Science). Volcanism is an important process which shapes the surfaces of all terrestrial planets, and is still active on Earth, Jupiter’s moon Io, … Continue reading

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THEMIS: Grazing light at sunrise on lava flows

THEMIS Image of the Day, January 26, 2017. The grazing light of sunrise, coming from the right, reveals edges and other details in lava flows of Daedalia Planum. These flows come from Arsia Mons volcano. A windstreak is visible at … Continue reading

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Blade-like ridges on Mars have diverse origins

Thin, blade-like walls, some as tall as a 16-story building, dominate a previously undocumented network of intersecting ridges on Mars, found in images from NASA’s Mars Reconnaissance Orbiter. The simplest explanation for these impressive ridges is that lava flowed into … Continue reading

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