Home, Sweet Home, Dream becomes Reality |
Home, Sweet Home, Dream becomes Reality |
Jun 21 2006, 05:32 AM
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#571
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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 |
After the positive response to my McMurdo 3D colour pan, i've gone back and done the same for Gibson: James This I can see. Hurrah! At a variety of resolutions I succeed. Even at the maximum, if I start at the bottom and traverse gradually upward, I keep the 3D effect for at least half the image height. When I start to lose it, I dash back down to one of the prominent 'iceberg' rocks to clear my vision. Down there all sorts of eroded remnants try to poke my eye out! It's like one of those dreams where you go from seeing clearly to missing the essentials, in spite of yourself. I really think cognitive psychologists should study the anaglyph effect. -------------------- My Grandpa goes to Mars every day and all I get are these lousy T-shirts!
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Jun 21 2006, 06:04 AM
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#572
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Absolutely great anaglyph, james! ...can I take a rock for me?
-------------------- I always think before posting! - Marco -
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Jun 21 2006, 06:27 AM
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#573
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Senior Member Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
This I can see. Hurrah! At a variety of resolutions I succeed. Even at the maximum, if I start at the bottom and traverse gradually upward, I keep the 3D effect for at least half the image height. When I start to lose it, I dash back down to one of the prominent 'iceberg' rocks to clear my vision. Good to hear you can see it Shaka. Same with me, going back to a prominant rock if I loose it, and after a while I was able to see all the way across to McCool hill, a great view. Absolutely great anaglyph, james! ...can I take a rock for me? If you manage to grab one let us know how you did it, I've been trying all afternoon but they seem just out of reach! -------------------- |
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Jan 5 2007, 12:20 AM
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#574
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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 |
O.K. It may be a faux pas to exhume a thread this old, but it seemed the one to announce the first formal presentation I have seen of the analysis of our beloved Home Plate - this one by Natalie Cabrol all by herself.
Sedimentology of Home Plate at Gusev Crater, Mars was presented at the recent AGU Fall Meeting. LINK I can't help but notice that the author is still treading carefully around the issue of HP's origin, be it volcanic or impact related. Can there be differences of opinion in the MER team? One wonders if further decisions will await 2007 visits. EDIT: Yes, I posted too soon. More presentations re Home Plate accompanied Cabrol's at the AGU meeting. To whit: Schmidt etal and: Aharonson et al These favor the volcanic source, and suggest stuff came out right in the middle of HP! How cool is that? -------------------- My Grandpa goes to Mars every day and all I get are these lousy T-shirts!
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Jan 5 2007, 06:25 AM
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#575
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Senior Member Group: Members Posts: 2228 Joined: 1-December 04 From: Marble Falls, Texas, USA Member No.: 116 |
No, I think it is a good time to resurrect a HP thread. A recent Leonard David piece on space.com contained some comments suggesting there is still significant debate over the origin of the feature. Those were insightful abstracts for those of us who don't have access to the complete papers.
I've been keeping up a sketch map of Spirit observations of strike and dip, and it agrees nicely with the published structural analysis of HP. That's not terribly surprising, since the dips in the area were intuitively obvious to the most casual rover. The central theme of the many HP origin hypotheses seems to be the observations of the centrally radial dips. Unfortunately, such observations can be used to support several different hypotheses. I'm really looking forward to the "short" trip back to that wonderful place. -------------------- ...Tom
I'm not a Space Fan, I'm a Space Exploration Enthusiast. |
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Jan 8 2007, 02:47 PM
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#576
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
I'm really looking forward to the "short" trip back to that wonderful place. Maybe it won't be even that "short"... The HP campaign will be long and there's Tyrone, where Spirit got stuck but where she'll return, perharps before HP, it's a much desired target...according to Jim Bell: "Besides HP, there's also those thick, salty Tyrone soils that we have to figure out as well. Those could represent the most interesting "water" story yet for Gusev, depending on what they show." -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Jan 18 2007, 11:32 PM
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#577
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Member Group: Members Posts: 866 Joined: 15-March 05 From: Santa Cruz, CA Member No.: 196 |
the Schmidt paper abstract describes a "...rock textures including a bomb sag at Home Plate that indicate it formed as the result of a phreatomagmatic volcanic eruption".
somehow in all the excitement i missed the images of that bomb sag, can anyone point to a picture? thanks! |
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Jan 18 2007, 11:42 PM
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#578
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Junior Member Group: Members Posts: 50 Joined: 7-July 06 From: Selden, NY Member No.: 960 |
Here's a picture of the bomb sag, if that is what it is:
http://marsrovers.nasa.gov/gallery/press/s...D-A807R1_br.jpg It is in the lower right hand corner of the image with the curved bedding underneath it. |
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Jan 18 2007, 11:46 PM
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#579
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Senior Member Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
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Jan 19 2007, 03:58 PM
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#580
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Member Group: Members Posts: 242 Joined: 17-February 04 From: Ohio, USA Member No.: 34 |
Regarding the purported bomb sag: Is the cobble that we see in the middle of the sag regarded as the volcanic bomb that produced the sag or is it just a rock from higher up in the cliff that happend to get stuck on the drooping layer?
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Jan 19 2007, 11:33 PM
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#581
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Junior Member Group: Members Posts: 50 Joined: 7-July 06 From: Selden, NY Member No.: 960 |
The bomb sag hypothesis is that the rock is actually a volcanic bomb that landed in some squishy sediments, producing soft-sediment deformation.
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Jan 20 2007, 05:38 PM
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#582
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Member Group: Members Posts: 242 Joined: 17-February 04 From: Ohio, USA Member No.: 34 |
Thanks for the reply.
Hmm, squishy enough to deform the bedding, but not not squishy enough to disrupt the bedding. Have the observations of Home Plate been compiled into a longer paper? |
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Jan 21 2007, 01:14 AM
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#583
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
The bomb sag hypothesis is that the rock is actually a volcanic bomb that landed in some squishy sediments, producing soft-sediment deformation. Hmmm. And then got conveniently tilted 90 degrees... ...I have my doubts about some of this. It seems a bit much to invoke gradualism *and* catastrophism on one site (I remain an acolyte of Arthur Holmes!). Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Jan 21 2007, 07:39 PM
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#584
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
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Jan 21 2007, 08:18 PM
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#585
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Dublin Correspondent Group: Admin Posts: 1799 Joined: 28-March 05 From: Celbridge, Ireland Member No.: 220 |
No I think there's a good chance that he really means Arthur Holmes
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