Tag Archives: basins

Geological evidence of a planet‐wide groundwater system on Mars

Posted on July 1, 2019 by rburnham

[Ed. note: Earlier reports about this research here and here.] Planetary Geomorphology Image of the Month, July 1, 2019: Francesco Salese (Utrecht University). Groundwater had a greater role in shaping the Martian surface and may have sheltered primitive life forms … Continue reading →

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Mars Express: Geological evidence of a global groundwater system

Posted on March 1, 2019 by rburnham

[Ed. note: This research was reported earlier here.] Mars Express has revealed the first geological evidence of a system of ancient interconnected lakes that once lay deep beneath the Red Planet’s surface, five of which may contain minerals crucial to … Continue reading →

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Geological evidence for a planet-wide groundwater system on Mars

Posted on January 24, 2019 by rburnham

[Editor’s note: From a paper by Francesco Salese and four co-authors recently published in the Journal of Geophysical Research.] Geological evidence of planet-wide groundwater system on Mars • Geological evidence supporting Martian planet-wide groundwater upwelling • Water-saturated zone intercepted by … Continue reading →

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HiRISE: Irregular basin floor material

Posted on September 26, 2016 by rburnham

Irregular basin floor material. Beautiful Mars series.

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HiRISE: Basin and channel features

Posted on June 15, 2015 by rburnham

Basin and channel features in Terra Sirenum intercrater terrain. Beautiful Mars series.

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Did big impacts disrupt heat flow in the Martian mantle?

Posted on January 26, 2012 by rburnham

Mars shows more than 20 impact basins with diameters of at least 1,000 kilometers (600 miles), and five of these are 2,500 km wide or larger. Based on crater counts, most of the basins appear to have occurred between in … Continue reading →

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Big bangs

Posted on May 16, 2011 by rburnham

Really large meteorites produce impact scars big enough to be called basins. Although not defined by a particular size, basins differ from smaller craters in that the floor of a basin follows the planet’s curvature. New calculations published in the … Continue reading →

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Chips off the old block?

Posted on May 16, 2011 by rburnham

Are Martian moons Phobos and Deimos escaped asteroids, as sometimes proposed? Robert Craddock (National Air and Space Museum) suggests in a paper in the February 2011 issue of Icarus they may have come from a large impact on Mars instead. … Continue reading →

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