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Concepción, The freshest crater yet to be explored
Tesheiner
post Feb 5 2010, 09:08 AM
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And here's an autostitched mosaic of today's navcams.
Attached Image


This is Chocolate Hills. Original picture here: http://qt.exploratorium.edu/mars/opportuni...C0P2556L2M1.JPG
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Stu
post Feb 5 2010, 09:34 AM
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Colour of Chocolate Hills (missing area at top, grrrr)

Attached Image


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ustrax
post Feb 5 2010, 09:52 AM
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QUOTE (Tesheiner @ Feb 5 2010, 08:33 AM) *
Enjoy it. smile.gif


writing with my mouth full... wink.gif
...and those are some tasty images you got there Stu! smile.gif


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Stu
post Feb 5 2010, 10:32 AM
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More images in a new post on my blog, along with some background info on Bohol Island, which some of you might find interesting...

http://roadtoendeavour.wordpress.com/2010/...chocolate-hills

smile.gif


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Juramike
post Feb 5 2010, 01:23 PM
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Contrast-adjusted crop of the Chocolate Hills to enhance the cracks and fissures. Filtered images 2 and 5 were combined and heavily played with:

Attached Image


Details and full res version here: http://www.flickr.com/photos/31678681@N07/4331802075/

The blueberries on their stems are funky!


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Stu
post Feb 5 2010, 01:46 PM
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QUOTE (Juramike @ Feb 5 2010, 01:23 PM) *
The blueberries on their stems are funky!


Yep, they are!

http://twitpic.com/11hoqt/full


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Juramike
post Feb 5 2010, 03:27 PM
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I *think* that might be telling something about the ages of the ejected blocks.

Noway those structures could've pre-existed prior to impact. Blocks got ejected. Failure along regions of surface "defects", putting blueberries at the crack margins. Then slow sand ablation leaves the blueberries at the end of stalks. In 10E(quoi?) years the stems will fail, and the blueberries will drop, and the stems will get ablated down to the rock surface.

So given an average blueberry diameter of 4 mm. Those stalks are about another 4 mm. Assuming the blueberries started with the tips flush at the crack margin, there has been 8 mm of erosion since block emplacement.


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SteveM
post Feb 5 2010, 04:00 PM
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QUOTE (Juramike @ Feb 5 2010, 10:27 AM) *
I *think* that might be telling something about the ages of the ejected blocks....


Yes, but it looks like a complicated problem, since the blueberrys on stalks (at least the ones that we can see) are in the niches that are comparatively sheltered from the erosive action of the wind.

Steve M
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Ant103
post Feb 5 2010, 04:24 PM
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Sol 2145 navcam pan smile.gif


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fredk
post Feb 5 2010, 08:14 PM
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Those Chocolate Hills sure do look tasty...

The latest Oppy update said we're approaching some ejecta blocks to possibly use the IDD on - perhaps Chocolate Hills?

The update also had this little tidbit:
QUOTE
Some of the rocks exhibit a dark crust, potentially impact melt.
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Stu
post Feb 6 2010, 11:12 AM
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My 'pan so far' of Concepcion...

http://twitpic.com/11nwh2/full

LOoking forward to seeing the proper versions here soon! smile.gif


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NW71
post Feb 6 2010, 11:19 PM
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QUOTE (elakdawalla @ Feb 3 2010, 06:45 PM) *
There's an awful lot of arm-wavey geology going on in this thread


At the risk of inviting more of the 'arm-wavey geology' highlighted by Emily what would be the underlying story with the twin craters? Would I be right in thinking it would be a meteorite that split into two on its descent through the martian atmosphere?

(I think this should be in the distant vistas thread - can someone help please!)

Neil
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Phil Stooke
post Feb 7 2010, 12:14 AM
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Consider all the possibilities:

- two separate impacts, a pure coincidence

- a meteorite that split in two

- two ejecta blocks from a distant crater, or one that split in two (i.e. these are secondary craters)

Nothing we have now could distinguish between these possibilities. One rule for arm-waving is not to stop with the first idea that comes along, but to look at all the other possibilities as well. Multiple working hypotheses! Then we can try to weed out the weaker suggestions with observations or other approaches.

Phil


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Stu
post Feb 7 2010, 10:56 AM
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Oh wow... the Chocolate Hills are turning out to be quite fantastic 3D targets...

Attached Image


Attached Image


Looking forward to more colour views of these rocks.


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akuo
post Feb 7 2010, 12:58 PM
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I don't usually do this kind of thing, but...

Does anyone else think Oppy has found her companion?

Attached thumbnail(s)
Attached Image
 


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