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Sol 454 - Larry And Methuselah |
 Apr 20 2005, 11:37 AM
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Founder  Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1  |
 http://www.unmannedspaceflight.com/doug_im...aving_larry.jpg (476kb) Larry is the outcropping to the right - Methuselah is the layered rock on the left. As an interesting point to judge distances - assuming zero slip the marks made by the hold-down-brackets on the wheel tread are 80cm apart - or about 2ft 7inches Doug |
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Apr 20 2005, 04:52 PM
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Member Group: Members Posts: 688 Joined: 20-April 05 From: Sweden Member No.: 273 |
QUOTE (djellison @ Apr 20 2005, 01:37 PM) http://www.unmannedspaceflight.com/doug_im...aving_larry.jpg (476kb) Larry is the outcropping to the right - Methuselah is the layered rock on the left. As an interesting point to judge distances - assuming zero slip the marks made by the hold-down-brackets on the wheel tread are 80cm apart - or about 2ft 7inches Doug  The layers seem to be pretty steeply inclined suggesting there has been active tectonics in the area since they were deposited. I can understand they are interested. TT |
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Apr 20 2005, 05:54 PM
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 Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
QUOTE (tty @ Apr 20 2005, 11:52 AM) The layers seem to be pretty steeply inclined suggesting there has been active tectonics in the area since they were deposited. I can understand they are interested. Your thinking is a bit Earth-centric, I'm afraid, TT. By far and away the more likely mechanism for upthrusting and tilting of bedrock layers in this area have to do with impact processes, not tectonics. Since the Columbia Hills rise above the plains of lava that were deposited within Gusev after its formation (and likely inundation by water), they were probably formed as rims of ancient craters. Impacts will tilt flaps of bedrock all around. I'm pretty sure that's the process that tilted these slabs of bedrock. A detailed analysis of the rock layers won't tell us a whole lot about the upthrust / tilting mechanism, anyway -- that's not what the science teams are so excited about. What's exciting is that Spirit has *finally* found an exposed face of layered sedimentary rock. The layers will tell a story of the conditions under which they were laid down, and *that* will tell us a lot about the history of Mars... -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Apr 21 2005, 08:39 AM
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Member Group: Members Posts: 290 Joined: 26-March 04 From: Edam, The Netherlands Member No.: 65 |
"What's exciting is that Spirit has *finally* found an exposed face of layered sedimentary rock. "
That has to be determined ! Could be lava-strata as well.... |
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djellison Sol 454 - Larry And Methuselah Apr 20 2005, 11:37 AM
dvandorn Another thing to consider in re these beds of sedi... Apr 20 2005, 06:23 PM
dvandorn QUOTE (Marcel @ Apr 21 2005, 03:39 AM)"W... Apr 21 2005, 08:49 AM SFJCody Is it me, or is there a significant change in soil... Apr 21 2005, 03:02 PM Gray Possibly tectonics, or Larry and Methuselah might ... Apr 20 2005, 05:53 PM Sunspot Is there a problem with the exploratorium website?... Apr 20 2005, 10:49 PM djellison Wow - yeah - an excellent drive imho - Meth and LL... Apr 20 2005, 10:51 PM Mode5 Surfs up!
Thanks for the analysis on this a... Apr 21 2005, 07:38 AM dvandorn QUOTE (Mode5 @ Apr 21 2005, 02:38 AM)Surfs up... Apr 21 2005, 08:18 AM djellison LOL - the JPL PAO playing catch up
http://marsr... Apr 21 2005, 07:40 AM aldo12xu http://marsrovers.jpl.nasa.gov/gallery/all...GEP06... Apr 21 2005, 04:31 PM Edward Schmitz Good discussion. Let me jump in here. There are ... Apr 21 2005, 04:43 PM dvandorn QUOTE (Edward Schmitz @ Apr 21 2005, 11:43 AM... Apr 21 2005, 06:52 PM Edward Schmitz QUOTE (dvandorn @ Apr 21 2005, 11:52 AM)In re... Apr 21 2005, 10:56 PM dvandorn QUOTE (Edward Schmitz @ Apr 21 2005, 05:56 PM... Apr 22 2005, 06:22 AM Edward Schmitz I was just noticing in this image of the Columbia ... Apr 21 2005, 11:06 PM Bill Harris QUOTE Here is a great example of a thrust fault in... Apr 21 2005, 11:21 PM djellison We need netlander
Doug Apr 21 2005, 11:26 PM dvandorn QUOTE (djellison @ Apr 21 2005, 06:26 PM)We n... Apr 22 2005, 06:25 AM TheChemist Exploratorium is still dead, but at last JPL updat... Apr 25 2005, 02:30 PM arccos Uuuh. This looks pretty Opportunity-like to me... Apr 26 2005, 06:36 AM dvandorn It looks like fine-grained sedimentary rock that... Apr 26 2005, 07:40 AM tty Cross-bedding is actually more typical of aeolian ... Apr 26 2005, 10:16 AM Tman It could be a deposit by a single event. And what ... Apr 26 2005, 12:37 PM Edward Schmitz QUOTE (Tman @ Apr 26 2005, 05:37 AM)It could ... Apr 27 2005, 06:23 AM john_s QUOTE (Edward Schmitz @ Apr 27 2005, 06:23 AM... Apr 27 2005, 03:02 PM glennwsmith Gentlemen,
It seems that interest in the stratigr... Apr 27 2005, 02:45 AM |
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