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Exploring Gediz Vallis and its ridge, Sols 3871-xxxx, 1 Jul 2023-
jvandriel
post Sep 22 2023, 08:39 PM
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The Navcam R view on Sol 3955.

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scalbers
post Sep 23 2023, 02:29 PM
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The two latest drives between 3948 and 3955 animated using official mosaics. We continue aiming southeast towards the curve in the race track pattern. Some of the layers in the race track pattern can be spotted even at a relatively close range to the SW. Phil's perspective images really helped alert me to this. The horizon is gradually lowering in the SW, though the two hilltops behind the ridge remain hidden.

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Longer steppable drive animation with a combination of official and Jan's mosaics from Sol 3435 to the present.


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Phil Stooke
post Sep 23 2023, 09:06 PM
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Jan's panorama for sol 3951 in circular form.

Phil

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Phil Stooke
post Sep 23 2023, 09:40 PM
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And the same for sol 3955.

Phil

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jvandriel
post Sep 25 2023, 02:59 PM
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The Navcam R view on Sol 3958.

Jan van Driel

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charborob
post Sep 26 2023, 12:43 PM
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Sol 3958 Rmastcam:
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Floyd
post Sep 26 2023, 05:01 PM
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Lots of resistant dark plates. Are they resistant layers laid down, or fracture intrusions generated later? Can someone with a background in geology tell us about what we see here?


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john_s
post Sep 26 2023, 08:02 PM
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Assuming you're referring to charborob's image, the flaky sheets here are mostly original sedimentary layers, rather than later filled fractures.

John
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Floyd
post Sep 26 2023, 09:33 PM
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Thanks John--any information on why the resistant layers are darker and more abrasion resistant than the other sedimentary layers. Has composition been revealed?

Floyd


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jvandriel
post Sep 27 2023, 01:17 PM
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The Navcam R view on Sol 3960.

Jan van Driel

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serpens
post Sep 28 2023, 03:19 AM
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Floyd, the darker erosion resistant laminations would possibly be a change to the sediment supply. For instance volcanic ash or a dust storm. Alternatively, assuming surface water interaction, chemical sedimentation from a short term change in temperature or pH. But there are a couple of examples in the image of dark, erosion resist plates perpendicular to laminations which would be fracture fill.
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Floyd
post Sep 28 2023, 04:20 PM
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Thanks Serpens. One of the elements of this forum I really enjoy is when experts jump in and provide information to help us non-expert understand what we are seeing in the images.


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charborob
post Sep 28 2023, 07:11 PM
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Sol 3960 Rmastcam:
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scalbers
post Sep 30 2023, 05:59 PM
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The two latest drives between 3955 and 3960 animated using official mosaics. We continue aiming southeast towards a kink in the curve in the race track pattern. Some of the race track layers can be spotted even at a relatively close range. The horizon is gradually lowering in the SW, with one low hilltop starting to emerge.

Attached Image


Longer steppable drive animation with a combination of official and Jan's mosaics from Sol 3435 to the present.


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Steve [ my home page and planetary maps page ]
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Phil Stooke
post Oct 1 2023, 06:45 AM
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Jan's panorama for sol 3958 in circukar form.

Phil

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... 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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