Exploring Gediz Vallis and its ridge, Sols 3871-xxxx, 1 Jul 2023- |
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Exploring Gediz Vallis and its ridge, Sols 3871-xxxx, 1 Jul 2023- |
 Sep 23 2024, 11:54 PM
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#721
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 Member  Group: Members Posts: 999 Joined: 9-September 17 From: UK Member No.: 8241  |
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Sep 24 2024, 02:41 PM
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#722
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Member Group: Members Posts: 999 Joined: 9-September 17 From: UK Member No.: 8241 |
MSL 4307-4309 M
© NASA/JPL-Caltech/MSSS/NeV-T  GIGAPAN -- GIGAMACRO MSL 4309-4311 MR © NASA/JPL-Caltech/MSSS/NeV-T  GIGAPAN -- GIGAMACRO MSL 4311 MR © NASA/JPL-Caltech/MSSS/NeV-T  GIGAPAN -- GIGAMACRO MSL 4311 ML © NASA/JPL-Caltech/MSSS/NeV-T  GIGAPAN -- GIGAMACRO -------------------- |
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Sep 24 2024, 04:01 PM
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#723
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Member Group: Members Posts: 999 Joined: 9-September 17 From: UK Member No.: 8241 |
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Sep 25 2024, 04:10 AM
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#724
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 Member Group: Members Posts: 156 Joined: 8-February 04 From: Phoenix, AZ USA Member No.: 9 |
QUOTE (Floyd @ Sep 21 2024, 07:56 AM)  Tim were the ripple blocks transported by flows from higher up or formed in the channel? I believe it is thought the sulfur nodules nearby were formed in situ in process possibly involving hydrogen sulfide, water and possibly organics. Can you tell us your thoughts, or that you have thoughts but can't share them at this time? Thanks, Floyd Good question! The channel seems to be filled with blocks of various lithology, possibly separated by a finer-grained matrix. Could be debris flows that were the final channel fill. The channel also seems to have been exhumed: first buried and then exhumed by eons of wind erosion. The channel may have carried water and lower concentrations of sediment as suspended and bed load down into the crater, then was filled by debris flows and buried by subsequent aeolian deposition. The entire stack of sediments seems to be characterized by periods of aggradation and degradation, and we see the spectacular stratigraphy in the canyon because of the current period of landscape degradation. -------------------- Tim Demko
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Sep 25 2024, 05:10 PM
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#725
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
This is Jan's panorama for sol 4312 in circular form. I thought we would be going around that little trough but here we are right in it.
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 PDF: 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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Sep 25 2024, 07:12 PM
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#726
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Senior Member Group: Members Posts: 2872 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
The Navcam R view on Sol 4314.
Jan van Driel
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