The western route, 5th leg after stop at Absecon / Reeds Bay |
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The western route, 5th leg after stop at Absecon / Reeds Bay |
  Jul 29 2009, 09:36 AM
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#121
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Senior Member  Group: Members Posts: 1043 Joined: 17-February 09 Member No.: 4605  |
QUOTE (SFJCody @ Jul 29 2009, 09:32 AM)  Looks like an iron meteorite. I don't think I would stake my paycheque, small as it may be, on that identification just yet. |
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Jul 29 2009, 09:52 AM
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#122
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 Senior Member Group: Members Posts: 1619 Joined: 12-February 06 From: Bergerac - FR Member No.: 678 |
A very incomplete color view of the meteorite
  Look like they anticipated the shot after the move but the rock is not in the box. Or this is just a part of a mosaic. The aspect of this rock looks very similar to Heatshield Rock. -------------------- |
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Jul 29 2009, 11:35 AM
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#123
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 Member Group: Members Posts: 206 Joined: 15-August 07 From: Shrewsbury, Shropshire Member No.: 3233 |
QUOTE (CosmicRocker @ Jul 29 2009, 06:21 AM) What a far-out thought! Those possibilities had not occurred to me, though they should have. Thanks for mentioning that, Paul. Do you have a reference to who first suggested it?The first article that I read which discussed the idea looking for Earth rocks on the Moon described the 2002 "Perspectives in Astrobiology" conference: http://science.nasa.gov/headlines/y2002/18...s.htm?list82388 I remember first reading about extending the search for Earth rocks to Mars at around this time. At the 2006 "Lunar and Planetary Science Conference" it was suggested that Earth rocks could have been flung as far away from Earth as Titan: http://www.newscientist.com/article/dn8867...e-to-titan.html |
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Jul 29 2009, 01:22 PM
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#124
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 Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
A report on Block Island by the Mini-TES would be conclusive...
in the meantime...it looks like its either a dusty iron meteorite or coprolite 
-------------------- CLA CLL
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Jul 29 2009, 01:29 PM
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#125
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
QUOTE (PDP8E @ Jul 29 2009, 02:22 PM) A report on Block Island by the Mini-TES would be conclusive... It would be astonishing - Mini-TES doesn't work anymore. |
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Jul 29 2009, 01:29 PM
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#126
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 The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Glasses at the ready...
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Jul 29 2009, 01:52 PM
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#127
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Solar System Cartographer Group: Members Posts: 10153 Joined: 5-April 05 From: Canada Member No.: 227 |
Not too shabby, Stu! I like the little projection casting a shadow into the big pit.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jul 29 2009, 02:43 PM
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#128
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Member Group: Members Posts: 713 Joined: 30-March 05 Member No.: 223 |
looks like another iron meteorite similar to:
2004: "Bounce Rock" 2005: "Heat Shield Rock" 2006: "Allan Hills Rock" ... ------------------ It's drive, drive, drive, said Squyres.  |
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Jul 29 2009, 02:44 PM
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#129
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 Member Group: Members Posts: 100 Joined: 20-May 06 Member No.: 780 |
Wouldn't a meteorite of that size make a crater?
It's just sitting there on top of the sand. |
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Jul 29 2009, 03:09 PM
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#130
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
It could just be sitting here after coming from elsewhere; maybe it's a small piece of a larger meteorite that landed a few km away, scattering fragments over a wide area. It does look pretty beaten up.
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Jul 29 2009, 03:10 PM
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#131
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 Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
Maybe the surface it landed on has ablated away, crater and all. How long do lumps of iron last on Mars?
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Jul 29 2009, 03:11 PM
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#132
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 Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
QUOTE (Nirgal @ Jul 29 2009, 10:43 AM) ...looks like another iron meteorite similar to... Bounce was not an iron meteorite. It was ejecta from a Mars crater. |
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Jul 29 2009, 03:11 PM
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#133
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Solar System Cartographer Group: Members Posts: 10153 Joined: 5-April 05 From: Canada Member No.: 227 |
Nirgal - Bounce Rock resembles rocks found on Earth as meteorites, but on Mars it's an ejecta block. It's not made of iron.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jul 29 2009, 03:17 PM
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#134
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Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
QUOTE (diane @ Jul 29 2009, 10:44 AM) Wouldn't a meteorite of that size make a crater? What ngunn said: If it is an iron meteorite, the crater it made many millions of years ago would have long since eroded away leaving behind only the "indestructible" chunk of iron. If the impact was recent enough for the crater to still exist, the meteorite would be invisible, buried beneath the floor of the crater. |
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Jul 29 2009, 03:36 PM
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#135
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Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
as far as cratering, I am sure the physicists and meteorite guys will weigh in , but we now have two pretty hefty meteorites (assuming that Block Island is one) that were found lying at the surface within 10 kilometers of each other and within the rover's vision... that is a significant observation.
as for the reasons.... angle of attack, speed, did it bounce or fragment? and the crater is covered over now...are any of the small craters in the near vicinity possibly related? Far away craters related? how long have they been sitting there? if you have 2 big meteorites every 10 sq miles, how many are lying on the surface of the planet? These few questions are from a multitude, that if answered well, will earn someone a PhD in Planetary Geology one fine day. -------------------- CLA CLL
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