MSL scientific results |
MSL scientific results |
May 30 2013, 12:45 PM
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Member Group: Members Posts: 237 Joined: 22-December 07 From: Alice Springs, N.T. Australia Member No.: 3989 |
Been busy with other things for a while, so it's nice to be back and see all the photo imaging work on the site going from strength to strength
I think a lot of you guys would really enjoy "Curiosity On Mars:First Results" 3 part x approx 2 hr presentations at the EuroGeosciences Union General Assembly published on the EGU Channel on YouTube on May16th. Plenty of good listening for the weekend! Although I enjoy the NASA press briefings, it's great to hear key mission scientists talking full-on to their peers. The talks travel along at a nice fast thought provoking pace! http://www.youtube.com/watch?v=hPbbhfGg0nc Admin: Moved post from 'First Drill' thread. |
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Jul 17 2015, 12:48 AM
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Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
Yes! This is an amazing find. Granites are thought to have formed on Earth when hydrated crust (read: seafloor) is subducted during plate tectonics. Now, trondhjemite (and the TTG suite in general) doesn't necessarily show the chemical signatures of having directly re-mixed with mantle material, so finding the stuff on Mars doesn't absolutely prove that Mars had what we would recognize as plate tectonics. It's a pretty sure sign that some crustal subduction of highly hydrated rocks did occur, though, of some type.
Unless, of course, this is an example of a piece of Earth's Archaen crust that was whacked into space by a big impact and transported to Mars, just as Martian meteorites have been found on Earth. That would seem to be less probable than Mars creating its own granites, though, I think. -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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