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Home Plate (second round)
djellison
post Sep 11 2007, 10:11 PM
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Olives, Peanuts, Phil's Head, Crisps, Soup, Ice Cream, and over at Meridiani..Berries smile.gif All things found in bowls.

Doug
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ngunn
post Sep 11 2007, 10:23 PM
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The inner solar system has obviously turned quite nutty. I'm heading back out.
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Shaka
post Sep 11 2007, 10:33 PM
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And for use in the New Year: Rose, Cotton, Sugar, Gator, Orange, Fiesta.... tongue.gif
...hmmm...or are we likely to have left HP by then? Somehow I doubt it.
We'll certainly be "in the ballpark".


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edstrick
post Sep 12 2007, 05:43 AM
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Anyone for Ratatooie?
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Tesheiner
post Sep 12 2007, 01:25 PM
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We have some fresh pics from sol 1312 and here are the navcams for a full 360º mosaic.
It looks like this place is what's called "Site 2" on the latest update.

QUOTE
On sol 1306 (Sept. 5, 2007), Spirit tried again and executed the drive flawlessly! Now that the rover's two rear wheels are on top of the eastern edge of Home Plate, Spirit is in position to explore the top of the elevated plateau along its eastern and southern edges. The next planned stop is a few meters away in an area known as "Site 2," located midway along the eastern scarp of Home Plate east scarp and several meters to the west of the scarp. (If you compared the roughly circular shape of the top of Home Plate to a clock, Site 2 would be at 3:30.)


Edited: Just for fun, this is an attempt to pinpoint Spirit's locations on a navcam mosaic from sol 1304.
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dvandorn
post Sep 13 2007, 05:56 AM
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Ooooh -- anyone else notice the arcuate and possibly pentagonal cracking in the upper surface of Home Plate in the latest images?

This used to be a cracked and tortured surface, it's been smoothed out over the megayears but it was as strong and tortured as any volcanic terrain we've ever seen on Earth.

-the other Doug


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dburt
post Sep 13 2007, 06:09 PM
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QUOTE (dvandorn @ Sep 12 2007, 10:56 PM) *
Ooooh -- anyone else notice the arcuate and possibly pentagonal cracking in the upper surface of Home Plate in the latest images?

Yes, hard to miss. To me they look like they probably are bulk shrinkage cracks - typical of dessicated, originally damp surge deposits, which almost everyone agrees these seem to be. Such shrinkage cracks also appear typical of the layered, cross-bedded sediments at Meridiani, which may or may not also be surge deposits (depending on whose interpretation you favor).

HDP Don
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Guest_AlexBlackwell_*
post Sep 13 2007, 06:16 PM
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QUOTE (dburt @ Sep 13 2007, 08:09 AM) *
Yes, hard to miss. To me they look like they probably are bulk shrinkage cracks - typical of dessicated, originally damp surge deposits, which almost everyone agrees these seem to be. Such shrinkage cracks also appear typical of the layered, cross-bedded sediments at Meridiani, which may or may not also be surge deposits (depending on whose interpretation you favor).

Which interpretation do you favor?
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dburt
post Sep 13 2007, 07:07 PM
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QUOTE (AlexBlackwell @ Sep 13 2007, 11:16 AM) *
Which interpretation do you favor?

I like your style. laugh.gif More seriously, the simplest that accounts for all observations. Fortuitously, observations are still being made, and so I won't comment further.

- HDP Don
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helvick
post Sep 13 2007, 11:55 PM
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Good to see you around HDP - I was worried that you had decided we had nothing left to offer. Looking forward to your take on the new stuff from both Home Plate and Victoria as it arrives.
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Tesheiner
post Sep 14 2007, 10:03 AM
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Dear guests, the "menu" for sol 1315 is "Bouillabaisse".
Delicious!



tongue.gif

CODE
01315::p2590::18::4::0::0::4::2::10::pancam_bouillabaisse_L257R1
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jamescanvin
post Sep 14 2007, 10:20 AM
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Sounds good. I wasn't so keen on tosols dish, I prefer mine unfractured!

CODE
01314::p2589::18::13::0::0::13::2::28::pancam_dumpling_fracture_L234567Rall


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Stu
post Sep 14 2007, 11:59 PM
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Nice view from here...

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dvandorn
post Sep 15 2007, 05:52 AM
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I'd like to see Spirit limp her way over to the fractures in the Plate that parallel its north-northwest edge. These cracks look constructional, not dessicational, to me. And where better to examine the history of the creation of this feature than along a constructional fracture?

I know I'm getting all excited about volcanic/basaltic rock emplacement, and Squyres et. al. are on record as not being all that interested in "ho-hum, another busted up hunk of lava." But for me, this is the kind of thing geology is all about -- reconstructing the events that caused such an unusual-looking but generically common (as there are certainly a number of similar features scattered throughout these hills) feature as Home Plate. I still don't think the possibility that this could have been part of an active hydrothermal system has yet been put to rest, since I know it had a great deal of support within the MER science team when Spirit first reached the Plate...

-the other Doug


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“The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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jvandriel
post Sep 15 2007, 03:05 PM
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The 360 degree panoramic view taken on Sol 1312

with the R0 Navcam.

jvandriel
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