Cape Tribulation, Sol 3744 (6Aug'14) - Sol 4077 (15Jul'15) |
Cape Tribulation, Sol 3744 (6Aug'14) - Sol 4077 (15Jul'15) |
Mar 11 2015, 08:36 PM
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#436
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Member Group: Members Posts: 334 Joined: 11-December 12 From: The home of Corby Crater (Corby-England) Member No.: 6783 |
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Mar 11 2015, 08:43 PM
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#437
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Member Group: Members Posts: 334 Joined: 11-December 12 From: The home of Corby Crater (Corby-England) Member No.: 6783 |
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Mar 11 2015, 10:37 PM
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#438
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Member Group: Members Posts: 384 Joined: 4-January 07 Member No.: 1555 |
Also, the colour and structure of the highlighted rock seems to be quite alien to it's surroundings. (At least to my untrained eye). Agreed. It is clearly not part of the bedrock and has been transported from elsewhere. The apparent shatter cone discussed above (beginning on Mar 4) and other rocks at the top of the ridge appear to be made out of the same material. Don Burt |
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Mar 12 2015, 03:47 PM
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#439
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
There is nothing alien about that highlighted rock. It is one of a family of "scoriaceous Burple rocks" present on the ridge overlying the possible "shattercones" in the area of "Site Sgt Chas Floyd", aka Site 194/0000.
--Bill -------------------- |
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Mar 12 2015, 08:32 PM
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#440
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Member Group: Members Posts: 334 Joined: 11-December 12 From: The home of Corby Crater (Corby-England) Member No.: 6783 |
dburt, thanks for that reply. I struggle to link previous posts to that with which I am immediately concerned. (Must do better)
BillHarris, regardless of what it is made of, as far as I am concerned, it is definitely alien to it's immediate surroundings. |
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Mar 12 2015, 11:34 PM
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#441
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Member Group: Members Posts: 384 Joined: 4-January 07 Member No.: 1555 |
There is nothing alien about that highlighted rock. It is one of a family of "scoriaceous Burple rocks" present on the ridge overlying the possible "shattercones" in the area of "Site Sgt Chas Floyd", aka Site 194/0000. --Bill I'm not sure I disagree with either of you, except that Bill seems to think that the bedrock is what appears to be shatter-coned (and it does, more or less), whereas I was talking about the loose possible shatter cone at the top of the ridge, made out of a piece of the "alien rock". These rocks look unusually porous, but I'm not sure yet whether they are truly "scoriaceous" (a bubbly igneous or impact melt texture) or merely brecciated (broken up by impact). Time will tell, I hope. Don Burt |
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Mar 12 2015, 11:53 PM
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#442
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Senior Member Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
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Mar 13 2015, 07:06 AM
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#443
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Senior Member Group: Members Posts: 1057 Joined: 17-February 09 Member No.: 4605 |
... made out of a piece of the "alien rock"..... I think Bill's comment dismissing "alien" is based on the fact that the only definition of alien as an adjective, that would seem vaguely applicable is "unfamiliar and disturbing or distasteful" (Oxford Dictionary) rather than any objection to algorithm's underlying contention. Dburt's describing it as transported is more accurate - an erratic without the glacial influence. I stand to be corrected but the implication from Centsworth's quote that shattercones in the rim/ejecta blanket are associated with megablocks agrees with everything I have read. So if this much discussed artefact is indeed a loose shattercone then it is most unlikely to have formed in the Endeavour impact. Actually the concept that it could have initially been formed and deposited in a megablock in the Miyamoto ejecta blanket, which was then brecciated in the Endeavour impact with the shattercone ballistically emplaced within the rim is kind of exciting. |
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Mar 14 2015, 05:27 PM
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#444
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Senior Member Group: Members Posts: 1075 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
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Mar 15 2015, 10:22 PM
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#445
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Senior Member Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
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Mar 15 2015, 10:54 PM
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#446
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Member Group: Members Posts: 267 Joined: 5-February 06 Member No.: 675 |
I think Bill's comment dismissing "alien" is based on the fact that the only definition of alien as an adjective, that would seem vaguely applicable is "unfamiliar and disturbing or distasteful" (Oxford Dictionary) I was puzzled by this; checking the OED, the first definition of alien as an adjective is: "Belonging to another person, place, or family; not of one's own; from elsewhere, foreign." I think belonging to another place, from elsewhere, or foreign pretty much sums up the intended meaning in this discussion. ADMIN: And with that, we can leave the discussion there. Back on topic please. |
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Mar 17 2015, 07:53 PM
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#447
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Member Group: Members Posts: 146 Joined: 22-November 14 From: Bormida (SV) - Italy Member No.: 7348 |
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Mar 18 2015, 08:30 AM
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#448
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Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
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Mar 18 2015, 10:15 AM
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#449
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Member Group: Members Posts: 201 Joined: 16-December 13 Member No.: 7067 |
Today is Reformat Day!
After living without flash, I can't imagine what getting it back will feel like. Hope everything goes smoothly. |
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Mar 19 2015, 10:39 AM
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#450
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Senior Member Group: Members Posts: 2872 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
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