Perseverance valley |
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Perseverance valley |
 Apr 25 2018, 10:46 PM
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#121
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Senior Member  Group: Members Posts: 1043 Joined: 17-February 09 Member No.: 4605  |
Sol 5066. I wonder what process formed this ring.
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Apr 25 2018, 10:52 PM
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#122
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 Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Huh. Wonder if the ring is aeolian deposition around a rock made of unusually soft material that weathered away over time.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Apr 26 2018, 01:16 AM
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#123
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Senior Member Group: Members Posts: 1043 Joined: 17-February 09 Member No.: 4605 |
Vaguely reminiscent of Spirit's "rotten rocks". Water altered rind remaining as the softer interior eroded.
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Apr 26 2018, 05:30 AM
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#124
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Solar System Cartographer Group: Members Posts: 10150 Joined: 5-April 05 From: Canada Member No.: 227 |
Also reminiscent of this little beauty seen by Curiosity at Dingo Gap on sol 527:
http://www.midnightplanets.com/web/MSL/ima...CAM00251M_.html Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke 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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Apr 26 2018, 11:40 PM
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#125
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Senior Member Group: Members Posts: 1043 Joined: 17-February 09 Member No.: 4605 |
Curiosity has seen quite a few attributed to gas escape (akin to a small mud volcano or diapir) in a sedimentary environment. Finding one here would provide a few insights into Perseverance Valley. Half crippled, sensor limited, operating on a shoestring budget in the shadow of her bigger relation at Gale Crater, Opportunity just keeps on giving.
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Apr 28 2018, 06:22 AM
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#126
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Senior Member Group: Members Posts: 1043 Joined: 17-February 09 Member No.: 4605 |
An outstanding update on Perseverance Valley on the Planetary Society page.
http://www.planetary.org/explore/space-top...-lpsc-2018.html |
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Apr 29 2018, 03:43 AM
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#127
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
Thanks for that link Serpens. Very enlightening.
The focus on the origin of Perseverance is understandable. The urge to explain this unique feature is what led them to this location. I would hope though that there would also be scope for Opportunity to live up to its name and do some opportunistic science that might have nothing to do with the origin. In particular, I find the light-toned deposits on dark rocks fascinating. What is the chemistry of these deposits (as separate from the underlying rock)? Is there anything special about the distribution? Has this material blown down from Winnemucca plateau where there seems to be a large reservoir of the stuff? Is the composition essentially the same as the planet-wide wind-blown deposits? Perhaps some of the answers are to be found in the APXS results from the "Aguas Calientes" target. I guess we may have to await the next conference for those revelations. |
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May 2 2018, 04:05 AM
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#128
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
New MIs. Not so easy to stitch seamlessly. Here is an overlap 3d slice (X-eye). [Or maybe ||-eye; it's hard to be sure since the surface is so irregular.] |
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May 2 2018, 05:38 PM
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#129
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 Senior Member Group: Members Posts: 4246 Joined: 17-January 05 Member No.: 152 |
Stereo views of "rotten rock" from 5073. Anaglyph:
Cross-eyed:
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May 2 2018, 11:34 PM
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#130
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Senior Member Group: Members Posts: 1043 Joined: 17-February 09 Member No.: 4605 |
I wonder whether the same textured, nearby rocks are fragments of the circular rim.
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May 3 2018, 05:52 AM
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#131
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
My best effort at a stitch of the Sol 5072 MIs.
The 3d from my previous post rotated 180 degrees. Easier to interpret as an X-eye. |
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May 5 2018, 05:44 AM
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#132
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
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May 5 2018, 01:44 PM
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#133
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Senior Member Group: Members Posts: 2819 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
The Navcam L0 view on Sol 5074.
Jan van Driel
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May 6 2018, 05:55 PM
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#134
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
https://agupubs.onlinelibrary.wiley.com/doi...02/2016GL072259
South Meridiani apparently hosted some of the valley networks that were formed before the Noachian/Hesperian boundary. If the impact that created Endeavour was into an existing fluvial system, I wonder if its location could explain the uniqueness of this section of the crater rim? Of course it would have been altered by subsequent processes but it might have influenced their evolution. |
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May 8 2018, 02:55 AM
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#135
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Senior Member Group: Members Posts: 1074 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
Sol 5078 Lpancam:
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