Concepción, The freshest crater yet to be explored |
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Concepción, The freshest crater yet to be explored |
 Feb 22 2010, 09:26 PM
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#301
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 The Poet Dude  Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60  |
Today's most fascinating rocks...
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Feb 23 2010, 05:01 PM
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#302
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
QUOTE (Stu @ Feb 22 2010, 02:26 PM)  Today's most fascinating rocks... In Stu's first image, there seems to be a second layer that is qualitatively different from the smooth crust layer. It is green in the false color while the crust is blue-grey. The second layer seems to be packed with berries. Any thoughts on this? |
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Feb 23 2010, 08:15 PM
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#303
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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 |
I'm not convinced that there are two different layers, of different colors - just areas of an excavated filled crack that do or don't contain blueberries. The berry-filled areas have different albedo properties that can mimic an actual color change, but there need not be any implied change in minerology.
This is another filled crack, exposed by the impact, such as we first examined a fortnight ago at Chocolate Hills. I have seen quite a number of fragments of such gray crack-fill on the Concepcion ejecta. It seems to be a characteristic of this crater, that we have not noticed before at other Meridiani craters, though we have looked at a large number of laminated sandstone ejecta blocks. Again I ask: why the difference? Howzabout a WAG hypothesis that preexisting cracks in the bedrock filled up with sediment, but that only wider spaces between the blocks would admit blueberries. Then something happened to indurate/lithify the crack fill. This could have involved slow, cold, 'damp' chemistry or a quick, hot, impact related process that happened a fraction of a second before the blocks were ejected. Assuming that JPL did the spectrometry on the Chocolate Hills exposure, they may have clear evidence for one of these alternatives - or maybe not  . I still can't understand why we see it here and not at Eagle or Endurance or Beagle or Victoria etc. Unless this kind of crack fill just doesn't last more than a thousand years (or 5 or 10 or so) after exposure.  Looking forward to JPL's report. -------------------- My Grandpa goes to Mars every day and all I get are these lousy T-shirts!
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Feb 23 2010, 10:11 PM
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#304
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
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Feb 23 2010, 10:12 PM
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#305
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 Senior Member Group: Members Posts: 4247 Joined: 17-January 05 Member No.: 152 |
Oh-oh. It looks like Oppy's made a serious navigational error on her latest drive, and ended up at the Viking 2 lander site:
http://qt.exploratorium.edu/mars/opportuni...FNP1212R0M1.JPG   
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Feb 23 2010, 10:20 PM
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#306
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Wow... pick yer way through that lot, Oppy...!!
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Feb 23 2010, 10:53 PM
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#307
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 Senior Member Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
Exactly what I thought when I saw this one, possibly the most classically 'Mars like' image Oppy has ever taken. Also in the downlink today was the last bit of the initial Concepción Crater pan.   James -------------------- |
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Feb 24 2010, 01:49 AM
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#308
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 Member Group: Members Posts: 399 Joined: 28-August 07 From: San Francisco Member No.: 3511 |
QUOTE ... initial Concepción Crater pan. WOW! A marvelous product for a marvelous vista! Thanks -------------------- 'She drove until the wheels fell off...'
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Feb 24 2010, 06:16 AM
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#309
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Gorgeous pic James, one to drool over, definitely.
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Feb 24 2010, 08:18 AM
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#310
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 Senior Member Group: Members Posts: 2086 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Oh yeah, definitely in the Top 10 list for panoramas... not that I'd ever try making such a list, of course!
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Feb 24 2010, 09:17 PM
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#311
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Today's "Wow!" Award surely has to go to...
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Feb 24 2010, 11:57 PM
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#312
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Solar System Cartographer Group: Members Posts: 10170 Joined: 5-April 05 From: Canada Member No.: 227 |
You've been doing some beautiful work with these rocks, Stu.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Feb 25 2010, 06:42 AM
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#313
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Thanks Phil, appreciate that. A couple more in this new blog post...
http://roadtoendeavour.wordpress.com/2010/...ocks-everywhere -------------------- |
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Feb 25 2010, 07:18 AM
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#314
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Member Group: Members Posts: 399 Joined: 28-August 07 From: San Francisco Member No.: 3511 |
Amazing quality! You really take us there Stu... please keep 'em coming
Ta -------------------- 'She drove until the wheels fell off...'
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Feb 25 2010, 04:21 PM
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#315
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 Senior Member Group: Members Posts: 2921 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
Yes Stu! Trouble is we trend to take this as granted and as "normal" product from you.
Your hard work deserve an award instead
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