Endeavour Crater, And again shall we conquer the Remoteness |
Endeavour Crater, And again shall we conquer the Remoteness |
Sep 29 2008, 03:13 PM
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#201
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
Opportunity is getting ready to embark on her most extraordinary journey, a true rover epic.
As information regarding how to win the distance are being collected here, and the emotional last views from Victoria Crater are being discussed here, I thought about creating a new thread that will surely become an obligatory stop as the tall peaks and other features of Endeavour start to rise in the horizon. Here we will be able to discuss the location of features seen from the distance, references that will help us understanding better what we are seing and that will, fortunately, feed our spirit across the long sail across the Meridiani sandwaves. Ultreya! I give it a kick with this navcam image, comparing it with Astro0's original (beautiful...) image: I'm sure James Canvin will correct me... EDITED: I can't resist...I tried! I honestly tried, but it is stronger than me...so many features ahead and not a single name?! Seriously, at Victoria we had features named after places visited by the vessel, and now for Endeavour? Assuming that Oppy will succeed on her quest will the mission keep the same policy, of naming places after Endeavour's tour? If so, there may be some names in common with Victoria... While we are ready to leave the port once more I remembered that we could start naming, internally, (in order to have catchier landmark references... ) these features, as they loom in the horizon, after the ship's crew. We could follow the order presented here. Let me just edit the image up there... -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Jun 5 2009, 05:02 AM
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#202
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Senior Member Group: Members Posts: 2228 Joined: 1-December 04 From: Marble Falls, Texas, USA Member No.: 116 |
...Does everyone agree that the layers of Meridiani Planum extend 800 or so meters beneath the surface that Opportunity now sits on? ... 800 meters has been quoted as the thickness of the Meridiani Planum sediments in some papers I've read. I don't recall if that was an average thickness or a maximum, but regardless, the thickness is almost certainly not constant. One would expect the thickness of a package of sediments laid down on the eroded surface of some basement rock to be quite variable. The thickness would be great over deep basins, but thinner over basement highs. The rim of Endeavor is a very significantly uplifted region of basement rock, so I would expect the sediments to thin greatly toward the rim. To answer your question more directly, I would guess that the visible peaks were uplifted at least a kilometer above the average height of the surface the Meridiani sediments were deposited on. -------------------- ...Tom
I'm not a Space Fan, I'm a Space Exploration Enthusiast. |
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Jun 5 2009, 08:05 AM
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#203
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Member Group: Members Posts: 593 Joined: 20-April 05 Member No.: 279 |
I would guess that the visible peaks were uplifted at least a kilometer above the average height of the surface the Meridiani sediments were deposited on. This paper would suggest a total crater depth of just over a kilometre for a crater 22km in diameter. How high above the Meridiani surface are the rim peaks, out of interest? (I can't find a handy figure). Andy |
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