Does Mars Still Shake, Rattle And Roll?
Compared to Earth, Mars is a relatively quiet planet, geologically speaking. Actually, very quiet, as in pretty much dead. While it has volcanoes much larger than any here, they have been inactive for a very long time; the latest studies suggest however that volcanic activity may have continued until only a matter of millions of years ago. That seems like an eternity to our human sense of time, but geologically, it is quite recent.
There is also the massive canyon system Valles Marineris, much larger than the Grand Canyon here on Earth, and evidence for ancient hot springs, glaciers, etc. which also show that Mars was once much more active than it is today.
Now, there is also evidence that marsquakes (as in earthquakes here) continued to shake the planet until only a few million years ago, and may even still happen today.
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© Paul Scott Anderson for Universe Today, 2012. | Permalink | No comment | Add to del.icio.us
Post tags: Mars, Mars Reconaissance Orbiter
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