Layered Rock |
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Layered Rock |
 Sep 17 2005, 03:31 PM
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#1
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Member  Group: Members Posts: 178 Joined: 13-September 05 Member No.: 498  |
There's some superb images coming in of the stratification exposed on rocks in the Erebus highway... it looks like this place was worth a visit for itself (of course) and not just for sticky drift avoidance...
I should probably get excited about pictures of the sand and pebbles too but I can't seem to  attached is one such partial image posted 17-Sep
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Sep 17 2005, 04:33 PM
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#2
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Senior Member Group: Members Posts: 2998 Joined: 30-October 04 Member No.: 105 |
Not only do we have stratified rock with the "mudcracks" extending through the layers, but also fractured, in-place rock. It should be getting more interesting...
--Bill -------------------- |
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Sep 17 2005, 05:58 PM
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#3
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 Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
I'm not sure we can say with any certainty that the evaporite bedrock is "in place." As in in place exactly where it was laid down. We're getting close to the rim of Erebus, the evaporite here might well be the eroded-flat remnants of jumbled ejecta.
I just don't want everyone to get their hopes up that the evaporite paving is actually an in-place rock bed, when it's still quite possible that it's been as jumbled and broken up as the deposits we've seen in and around smaller impact craters. -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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Sep 24 2005, 04:18 PM
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#4
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Senior Member Group: Members Posts: 2998 Joined: 30-October 04 Member No.: 105 |
Oppy is going to be pecking around the South Shetland outcrop for a few days.
Why does this Front Hazcam image make me think "Say Ahhh..."?  --Bill -------------------- |
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Sep 24 2005, 05:24 PM
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#5
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 Member Group: Members Posts: 710 Joined: 28-September 04 Member No.: 99 |
QUOTE (Bill Harris @ Sep 24 2005, 04:18 PM) Why does this Front Hazcam image make me think "Say Ahhh..."?  Diagnosis: this patient ate too many muffins. |
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Sep 24 2005, 06:43 PM
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#6
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
18 months ago, I saw a blueberry muffin at a supermarket and chuckled to myself
Yesterday - I saw an ICED blueberry muffin in the same place in the same store... I began to wonder, with the rind observations, perhaps a product line manager for Morrisons is an MER fan  Doug |
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Sep 26 2005, 01:40 PM
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#7
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Senior Member Group: Members Posts: 2835 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
A panoramic view of layered bedrock.
Taken on Sol 591 with the R1 Pancam. jvandriel
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Sep 29 2005, 06:07 PM
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#8
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 Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
QUOTE (djellison @ Sep 24 2005, 06:43 PM) 18 months ago, I saw a blueberry muffin at a supermarket and chuckled to myself Yesterday - I saw an ICED blueberry muffin in the same place in the same store... I began to wonder, with the rind observations, perhaps a product line manager for Morrisons is an MER fan Doug I was reminded of this post this weekend as I nibbled on macadamia nuts thinking how much they looked like Iapetus. 
-------------------- If Occam had heard my theory, things would be very different now.
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Oct 1 2005, 04:28 AM
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#9
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Member Group: Members Posts: 233 Joined: 21-April 05 Member No.: 328 |
jvandriel, re the photo you posted of layered bedrock -- if that's not evidence of water, I don't know what is . . .
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Oct 1 2005, 12:01 PM
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#10
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 Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
QUOTE (ElkGroveDan @ Sep 29 2005, 07:07 PM) I was reminded of this post this weekend as I nibbled on macadamia nuts thinking how much they looked like Iapetus. You're nuts! -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Oct 1 2005, 12:50 PM
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#11
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 Member Group: Members Posts: 362 Joined: 12-June 05 From: Kiama, Australia Member No.: 409 |
QUOTE (Bob Shaw @ Oct 1 2005, 11:01 PM) You're nuts! First fossil find confirmed Fossilised Court Jester complete with hat and macadamias And you think he is nuts?
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Oct 1 2005, 08:07 PM
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#12
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 Member Group: Members Posts: 356 Joined: 12-March 05 Member No.: 190 |
I think it looks like a robot
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Oct 10 2005, 05:20 PM
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#13
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Senior Member Group: Members Posts: 2998 Joined: 30-October 04 Member No.: 105 |
The evaporite bedrock is looking a bit different and interesting as Oppy heads westward around Erebus. One thing I've noticed are the "rounded" paving stones, the latest seen in the right foreground below, and an earlier color image of one.
Any ideas on what we're seeing here? This is a distinctive pattern: one was unusual, but two make a trend... My thoughts are that they might be shock-related from earlier, eroded-away craters.If anyone says "stromotolites" I'll throw a hissy-fit. --Bill -------------------- |
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Oct 10 2005, 05:50 PM
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#14
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Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
I think it's ancient ejecta from the Erebus impact, eroded down to flat "paving stones." Possibly with further evaporite formation on top of jumbled ejecta blocks.
-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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Oct 10 2005, 05:50 PM
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#15
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 Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
-------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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