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Back At Larry's Lookout
Guest_Sunspot_*
post May 18 2005, 06:29 PM
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Some pretty complex driving by the look of it:

http://qt.exploratorium.edu/mars/spirit/fo...E0P1214R0M1.JPG

Now this is odd:

http://qt.exploratorium.edu/mars/spirit/na...E0P0617R0M1.JPG

It looks like some of the rocks have slid down the dune blink.gif
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Bill Harris
post May 18 2005, 06:37 PM
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Fascinating image. I'm not one of the "water, water everywhere..." crowd, but that odd pattern in the dust immediately below the bluff outcrop looks positively _splat-like_.

What do you make of it?

--Bill


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Guest_Sunspot_*
post May 18 2005, 06:40 PM
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I thought it looked like a thin/harder crust on top of the dune had slid down slightly.
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mhoward
post May 18 2005, 07:13 PM
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QUOTE (Sunspot @ May 18 2005, 06:40 PM)
I thought it looked like a thin/harder crust on top of the dune had slid down slightly.
*


Another view: http://nasa.exploratorium.edu/mars/spirit/...E0P0123L0M1.JPG
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Chmee
post May 18 2005, 07:22 PM
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That is my take of it too: A hard, plate-like crust slipped down the incline during the recent past. Of course, it begs the question, why is there crust at that spot? tongue.gif
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john_s
post May 18 2005, 08:25 PM
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QUOTE (Chmee @ May 18 2005, 07:22 PM)
That is my take of it too: A hard, plate-like crust slipped down the incline during the recent past.  Of course, it begs the question, why is there crust at that spot? tongue.gif
*


I wonder if Spirit caused a shifting of the outcrop when it drove up on the other side of Larry's Lookout on Sol 409, and drilled a rat hole on Sol 416? That slip looks extremely fresh. I 'm not sure how close this slip is to where Spirit was before, though. If the rock behind the "soil" was somehow pushed outwards, it could maybe cause the soil to break like that even if there wasn't a discrete crust- I think I've seen similar patterns when playing with damp sand on a beach. Very cool!
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john_s
post May 18 2005, 08:30 PM
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Ignore this one- not sure what happened...
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TheChemist
post May 18 2005, 09:34 PM
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I have the impression Spirit's previous visit to Larry is rather far on the other side of the outcrop. Look at jvandriel's latest panorama in the Jibsheet thread to get an idea.
The "caking" is funny and cool cool.gif
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mhoward
post May 18 2005, 10:59 PM
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From Steve Squyres' latest update http://athena.cornell.edu/news/mubss/

"At Gusev, Spirit has arrived at a safe standoff position for observing the eastern side of Larry's Lookout. We're going to sit here and do some serious Pancamming for a sol or two, and then we're going to have to decide what comes next. There are a bunch of possibilities, and we're going to have a very interesting time choosing among them."
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alan
post May 19 2005, 12:56 AM
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QUOTE (Sunspot @ May 18 2005, 06:40 PM)
I thought it looked like a thin/harder crust on top of the dune had slid down slightly.
*

The first thing I thought was it slid down when Spirit did its turn just below it. But looking back I see it was already there on sol 483
http://marsrovers.jpl.nasa.gov/gallery/all...B2P2418R1M1.JPG
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Tman
post May 19 2005, 07:59 PM
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QUOTE (alan @ May 19 2005, 02:56 AM)
QUOTE (Sunspot @ May 18 2005, 06:40 PM)
I thought it looked like a thin/harder crust on top of the dune had slid down slightly.
*

The first thing I thought was it slid down when Spirit did its turn just below it. But looking back I see it was already there on sol 483
http://marsrovers.jpl.nasa.gov/gallery/all...B2P2418R1M1.JPG
*


Also already on sol 442: http://marsrovers.jpl.nasa.gov/gallery/all...28P2394L5M1.JPG (probably the first shoot of it)

Or already here "somewhere" in a Navcam on sol 438: http://marsrovers.jpl.nasa.gov/gallery/all...00P1625R0M1.JPG

P.S. Hey forum, nice you are alive again smile.gif

This post has been edited by Tman: May 19 2005, 08:14 PM


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mhoward
post May 19 2005, 08:32 PM
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A closeup of the "overhang" as I call it, or the "dragon head" as I think someone else called it:
http://nasa.exploratorium.edu/mars/spirit/...E0P2421L7M1.JPG
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jvandriel
post May 19 2005, 08:36 PM
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A panoramic view of Larry's Lookout and surrounding seen from Jibsheet.

Pictures taken with the Nav cam on Sol 487.

jvandriel
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jvandriel
post May 19 2005, 08:38 PM
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And a view of the other side of Larry's lookout also taken with the Nav cam on sol 488.

jvandriel
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Guest_Edward Schmitz_*
post May 20 2005, 02:53 AM
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QUOTE (mhoward @ May 18 2005, 12:13 PM)
QUOTE (Sunspot @ May 18 2005, 06:40 PM)
I thought it looked like a thin/harder crust on top of the dune had slid down slightly.
*


Another view: http://nasa.exploratorium.edu/mars/spirit/...E0P0123L0M1.JPG
*


I was wondering about weather spirit had been up there previously. But it realy doesn't look like it. I haven't seen anthing to indicate that it was. It doesn't look like it happens alot. I haven't seen anything that looks like old slides. It might be rare and we got lucky. Strange that it seems crusty. That would indicate that the grains were not active. The slope is static since it was cemented.

Anybody have any insights... ?
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