Home, Sweet Home, Dream becomes Reality |
Home, Sweet Home, Dream becomes Reality |
Feb 5 2006, 06:46 PM
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Senior Member Group: Members Posts: 1229 Joined: 24-December 05 From: The blue one in between the yellow and red ones. Member No.: 618 |
Hope no one minds, but I felt we have to have a new topic, right from the start, as a compendium of all the Factual Observations on this incredible structure...this Mother Ship from another world...this...(who said Burgess Shale? I laughed at that at the time. ) Who will start us off with a detailed description of what we see before us TODAY February 5, 2006 - Super Sunday.
(I'll be running from game to Exploratorium all afternoon! -------------------- My Grandpa goes to Mars every day and all I get are these lousy T-shirts!
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Feb 8 2006, 08:58 PM
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Member Group: Members Posts: 646 Joined: 23-December 05 From: Forest of Dean Member No.: 617 |
Now _that's_ what we like to see!
http://qt.exploratorium.edu/mars/spirit/fo...55P1206R0M1.JPG My uneducated intuition makes me think the lower, thicker layers, which seem to have large grains (small pebbles?) embedded in them, are composed of volcanic ash rather than windblown (or water-washed) fine sediments. Of course intuition is reliably wrong... Question to the geologists: does rock formed from volcanic ash appear any different (to the instruments on Spirit) if the ash fell onto standing water, or onto dry land? Hmm, and I suppose if we imagine that there are repeated episodes of ash fall and periods under water, it will make a difference if the sediments between the water and the ash are water permeable? Clearly there's SOMETHING different between the lower, coarse layers and the higher fine layers. What else might it be? (this is a real question, not a rhetorical.) -------------------- --
Viva software libre! |
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