Cape York, Landfall! |
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Cape York, Landfall! |
 Aug 21 2011, 03:08 PM
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#301
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Junior Member  Group: Members Posts: 98 Joined: 17-July 11 From: Pasadena, CA Member No.: 6066  |
QUOTE (mhoward @ Aug 21 2011, 06:41 AM)  Nice drive! (2692) Huzzah!   Besides the obvious fact that the front Haz's (after the Michael Jordan spin move to have us drive forward rather than backward) show Tisdale 2 right under our nose, the other indicator we were expecting of having made it was that the post-drive navcams wouldn't be able to see Tisdale 2. And whatddya know. -m |
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Aug 21 2011, 03:49 PM
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#302
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 Senior Member Group: Moderator Posts: 2606 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
We're parked! Put the money in the meter, we're gonna be here a while!
-------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Aug 21 2011, 04:30 PM
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#303
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 Senior Member Group: Members Posts: 1967 Joined: 28-December 04 Member No.: 132 |
QUOTE (mhoward @ Aug 21 2011, 10:41 AM) Nice drive! (2692) And a nice look at a light-colored rubble pile (or roughed up rock) I think you mention a few posts back.
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Aug 21 2011, 06:02 PM
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#304
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 The Poet Dude Group: Moderator Posts: 5546 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Wow...
If this is all that's left of a rock, try to imagine how long it took to turn it to this pile of light dust...
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Aug 21 2011, 08:36 PM
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#305
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 Member Group: Members Posts: 196 Joined: 3-January 08 From: Virgo Supercluster Member No.: 3995 |
That rubble pile reminds me of those I encountered on an alluvial fan in Death Valley.
I figured that the discrete piles of rhyolite, basalt, etc. were small boulders that had shattered due to the extreme temperature variations of the place. Photos from the trip: The alluvial fan:
Start of disintegration process:
Complete mess:
Several piles. It's starting to look like the surface of Cape York:
Is it too cold on Mars for diurnal heating/cooling cycles to have such an effect? -------------------- Astrogeologists have stars in their eyes and rocks in their heads!
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Aug 21 2011, 09:21 PM
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#306
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Senior Member Group: Members Posts: 1967 Joined: 28-December 04 Member No.: 132 |
QUOTE (Gladstoner @ Aug 21 2011, 04:36 PM) Is it too cold on Mars for diurnal heating/cooling cycles to have such an effect? Here's a paper on that subject: Simulating weathering of basalt on Mars and Earth by thermal cycling"...diurnal cycling of temperatures on Mars can cause deterioration of rocks with a pre‐existing stress history, as would be typical for surface rocks here... ....dramatic failures of basalt boulders could occur under current Martian conditions, apparently due only to thermal cycling." |
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Aug 22 2011, 02:02 AM
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#307
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Senior Member Group: Moderator Posts: 2606 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Thanks for that reference!
-------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Aug 22 2011, 02:06 AM
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#308
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 Senior Member Group: Moderator Posts: 3172 Joined: 11-August 04 From: USA Member No.: 98 |
Here's an animation of the sunset on sol 2666 that I hacked together tonight. I was going to try to make a little YouTube movie out of it, but I've run out of time to work on it for now, so I've just put it into QuickTime format. Since it's made from the uncalibrated JPEGs (L7 and R4 filters) the color should be regarded as a whimsical guestimation at best.
MERB2666Sunset_h.mov (425 KB)
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Aug 22 2011, 02:55 AM
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#309
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 Member Group: Members Posts: 662 Joined: 9-February 07 Member No.: 1700 |
Fun -- it's like a big shooting star!
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Aug 22 2011, 05:50 AM
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#310
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 Member Group: Members Posts: 331 Joined: 2-May 05 Member No.: 372 |
Hey guys, I'm just checking in. Just read this whole thread, probably gonna be lurking in this thread, possibly contributing a bit. Very nice images in this thread. Good to see some familiar people as well as new faces, been a long time since I've been here. Looking forward to Opportunity's adventures in Endeavour Crater.
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Aug 22 2011, 02:03 PM
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#311
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The Poet Dude Group: Moderator Posts: 5546 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Colour view of "Ridout"...
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Aug 22 2011, 03:15 PM
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#312
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The Poet Dude Group: Moderator Posts: 5546 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Beautifully-eroded rock seen by Oppy on Sol 2681 (pre-landfall)...
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Aug 22 2011, 03:55 PM
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#313
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 Member Group: Members Posts: 508 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
QUOTE (elakdawalla @ Aug 18 2011, 11:56 PM) Still, I gotta say I read John's post and I was all, "what, you can say all that from one low-res JPEGgy color photo?" Belated lame self-justification- I was gone all weekend and not thinking about Mars at all. I only said it *looked* like scoracious lava with xenoliths- I've seen similar things in lava fields in the Arizona desert. Looking more closely, though, Munro is clearly a beautiful breccia like the other rocks around here. Can't wait for the close-ups! John |
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Aug 22 2011, 07:01 PM
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#314
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Junior Member Group: Members Posts: 98 Joined: 17-July 11 From: Pasadena, CA Member No.: 6066 |
QUOTE (john_s @ Aug 22 2011, 07:55 AM) Belated lame self-justification- I was gone all weekend and not thinking about Mars at all. Lyons! Heck yeah. Great town to bike to/through from Boulder. /boulderite -m |
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Aug 23 2011, 06:39 PM
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#315
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Senior Member Group: Moderator Posts: 3172 Joined: 11-August 04 From: USA Member No.: 98 |
2692-2693. This is 360x96 [sic] degrees, centered on north instead of east.
  
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