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    Volcanic Eruption tagged posts

    Giant Mantle Plume reveals Mars is more Active than previously thought

    December 6, 2022, Categories  Astronomy/Space

    Artist's impression of an active mantle plume underneath the Martian surface.
    Artist’s impression of an active mantle plume – a large blob of warm and buoyant rock – rising from deep inside Mars and pushing up Elysium Planitia, a plain within the planet’s northern lowlands.Adrien Broquet & Audrey Lasbordes

    Orbital observations unveil the presence of an enormous mantle plume pushing the surface of Mars upward and driving intense volcanic and seismic activity. On Earth, shifting tectonic plates reshuffle the planet’s surface and make for a dynamic interior, so the absence of such processes on Mars led many to think of it as a dead planet, where not much happened in the past 3 billion years.

    In the current issue of Nature Astronomy, scientists from the University of Arizona challenge current views of Martian geodynamic evolution with a report on the discover...

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    Explosive Volcanic Eruption Produced Rare Mineral on Mars

    July 26, 2022, Categories  Astronomy/Space

    NASA's Mars Curiosity rover
    NASA’s Curiosity Mars rover snapped this low-angle self-portrait at the site where it drilled into a rock July 30, 2015, producing a powder (visible in foreground) that was later confirmed to contain the rare mineral tridymite. (Image courtesy of NASA/JPL-Caltech/MSSS)

    Researchers publish scenario that explains 2016 discovery by NASA’s Curiosity rover. Planetary scientists from Rice University, NASA’s Johnson Space Center and the California Institute of Technology have an answer to a mystery that’s puzzled the Mars research community since NASA’s Curiosity rover discovered a mineral called tridymite in Gale Crater in 2016.

    Tridymite is a high-temperature, low-pressure form of quartz that is extremely rare on Earth, and it wasn’t immediately clear how a concentrated chunk of it ended...

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