Jezero Crater Rim Campaign, Sols 1250- xxxx, 27 Aug 2024-, Exploring the ancient rocks of Jezero crater's rim. |
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Jezero Crater Rim Campaign, Sols 1250- xxxx, 27 Aug 2024-, Exploring the ancient rocks of Jezero crater's rim. |
 Sep 21 2024, 05:22 AM
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#31
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 Member  Group: Members Posts: 156 Joined: 8-February 04 From: Phoenix, AZ USA Member No.: 9  |
QUOTE (Floyd @ Sep 14 2024, 08:55 AM)  Wow! Very nicely rounded and the white and dark areas seem to be of same hardness. I don't see any ChemCam images yet. I think with the team having taken full multispectral images they will do ChemCham as well. Might this be another not often seen granite rock? It would be great if any of the geologists reading added a few comments. I'm still here! This looks like a foliated metamorphic rock...a gneiss! If it is a gneiss, earth rocks like this form a mid- to lower-crustal depths, and are of granulite metamorphic grade. If it is ejecta, the crater impact was in an area of extension or hyperextension (like a metamorphic core complex) where deep crustal rocks were uplifted from those depths by crustal thinning and high heat flow. I do not recall any other rocks or outcrops found on Mars that showed such a high grade of metamorphism. -------------------- Tim Demko
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Sep 21 2024, 01:04 PM
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#32
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Member Group: Members Posts: 934 Joined: 4-September 06 From: Boston Member No.: 1102 |
Tim, I much appreciate your explanation and all that you have contributed to this form since its very beginning !!!
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Sep 21 2024, 02:07 PM
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#33
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 Member Group: Members Posts: 706 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
It does look gneiss-ish, which would be pretty radical if true. But the rover has now moved well beyond it, so the team must have decided it wasn't worth going back to investigate further.
John |
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Sep 24 2024, 03:18 AM
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#34
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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.
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 24 2024, 10:43 AM
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#35
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Member Group: Members Posts: 934 Joined: 4-September 06 From: Boston Member No.: 1102 |
Alas no ChemCam till we see another one like it. By the time the images were down, the rover had driven on.
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Yesterday, 03:32 AM
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#36
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Member Group: Members Posts: 427 Joined: 18-September 17 Member No.: 8250 |
QUOTE (Floyd @ Sep 24 2024, 03:43 AM) Alas no ChemCam till we see another one like it. By the time the images were down, the rover had driven on. AI in JPL's next Mars rover should avoid such oversights. |
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Yesterday, 07:15 PM
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#37
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
This is neo56 (Thomas)'s panorama for sol 1268 in circular form. The sense of climbing a big hill is very apparent here. I will try to keep up more with Perseverance now, especially if I can use Thomas's panoramas.
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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Today, 06:25 PM
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#38
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 Member Group: Members Posts: 999 Joined: 9-September 17 From: UK Member No.: 8241 |
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