The Top of Vera Rubin Ridge Part 1, Site 66-67, sol 1812-1943, 11 Sep 2017-23 Jan 2018 |
The Top of Vera Rubin Ridge Part 1, Site 66-67, sol 1812-1943, 11 Sep 2017-23 Jan 2018 |
Sep 11 2017, 09:50 AM
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#1
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Senior Member Group: Members Posts: 2431 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
Welcome to Route 66... Er, make that Site 66
Drive 0000 on Sol 1812. Roughly stitched L-NavCam using MS ICE Midnight Planets reporting it as ~5.6m ESE (115º) link |
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Sep 11 2017, 08:19 PM
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#2
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
A new site seems like a good spot to make the split to a new thread.
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Sep 13 2017, 05:15 AM
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#3
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Senior Member Group: Members Posts: 2431 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
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Sep 13 2017, 09:28 AM
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#4
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Senior Member Group: Members Posts: 2872 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
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Sep 13 2017, 09:49 AM
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#5
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Senior Member Group: Members Posts: 2872 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
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Sep 13 2017, 11:01 PM
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#6
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Senior Member Group: Members Posts: 1057 Joined: 17-February 09 Member No.: 4605 |
The really fine laminations indicate suspension fallout in reasonably deep still water, so the crater was experiencing a wet environment when this level was laid down. Given the original permeability of the deposits my horribly unreliable intuition suspects that the hematite developed during a dry cycle via a mixing interface between groundwater and water infiltrating from a disconnected stream, fed by acidic meltwater at the beginning of the volcanic period that gave rise to the sulphate formation. Development in an open rather than closed environment.
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Sep 14 2017, 06:24 AM
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#7
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
-------------------- ... because the Solar System ain't gonna map itself.
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Sep 14 2017, 08:03 AM
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#8
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Senior Member Group: Members Posts: 2431 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
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Sep 14 2017, 11:39 AM
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#9
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Member Group: Members Posts: 934 Joined: 4-September 06 From: Boston Member No.: 1102 |
The really fine laminations indicate suspension fallout in reasonably deep still water, so the crater was experiencing a wet environment when this level was laid down. Given the original permeability of the deposits my horribly unreliable intuition suspects that the hematite developed during a dry cycle via a mixing interface between groundwater and water infiltrating from a disconnected stream, fed by acidic meltwater at the beginning of the volcanic period that gave rise to the sulphate formation. Development in an open rather than closed environment. I assume the spot was cleared of dust by laser blasts, not by brushing? If so I don't think I have ever seen this type of cleaning. Might the shiny surface be hematite? Not berries, but sheets??? -------------------- |
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Sep 14 2017, 09:30 PM
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#10
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Senior Member Group: Members Posts: 2431 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
I assume the spot was cleared of dust by laser blasts, not by brushing? If so I don't think I have ever seen this type of cleaning. Might the shiny surface be hematite? Not berries, but sheets??? It appears to be LIBS of an AEGIS target. Here is the before and after LIBS. The eroded surface seems to have small 'facets' for want of a better description. Certainly an interesting site... |
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Sep 16 2017, 01:18 AM
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#11
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Senior Member Group: Members Posts: 1057 Joined: 17-February 09 Member No.: 4605 |
Specular reflections which is a pointer to crystalline minerals. Given that this is the hematite cemented ridge we could punt for hematite / goethite.
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Sep 16 2017, 08:31 AM
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#12
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Senior Member Group: Members Posts: 2431 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
2 MAHLI's from Sol 1816 of the fractured sedimentary bedrock in front of the rover. The first is a context frame, the second is a focus merged product of the center of the context frame. The surface dust is more abundant on certain areas, probably just on the 'flatter sections' but at first glance I thought is was concentrated at specific laminations
Links ONE and TWO |
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Sep 16 2017, 11:48 AM
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#13
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Senior Member Group: Members Posts: 2431 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
ChemCam RMI Z-stack & red/cyan anaglyph of fine laminations in the target "Phoney Island".
Assembled using the 7 'ENHANCED Data Products' posted by JPL of the 9 RMI frames acquired, it may be possible to pull some more detail from all 9 if the missing 2 turn up as enhanced files. I used PICOLAY to assembled the Z-Stack and the anaglyph shown here. I'm sure JPL's 3D model will be much better than this basic version, but it was fun making it |
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Sep 16 2017, 12:38 PM
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#14
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Member Group: Members Posts: 684 Joined: 24-July 15 Member No.: 7619 |
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Sep 17 2017, 11:48 PM
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#15
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Senior Member Group: Members Posts: 1057 Joined: 17-February 09 Member No.: 4605 |
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