Jezero Delta Campaign, Sols 414-1000, 21 Apr 2022- 23 Dec 2023 |
Jezero Delta Campaign, Sols 414-1000, 21 Apr 2022- 23 Dec 2023 |
Jul 28 2022, 07:26 PM
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#301
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Senior Member Group: Members Posts: 1630 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
Now I see the funny looking feature in the gap appears to be much closer than I previously thought.
Gigapan - PERSEVERANCE 492
© NASA/JPL-Caltech/MSSS/ASU/NeV-T -------------------- Steve [ my home page and planetary maps page ]
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Jul 28 2022, 11:08 PM
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#302
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Member Group: Members Posts: 825 Joined: 9-September 17 From: UK Member No.: 8241 |
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Jul 30 2022, 08:11 PM
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#303
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Member Group: Members Posts: 665 Joined: 9-May 21 From: Germany Member No.: 9017 |
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Jul 30 2022, 08:15 PM
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#304
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Member Group: Members Posts: 665 Joined: 9-May 21 From: Germany Member No.: 9017 |
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Jul 30 2022, 10:02 PM
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#305
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Member Group: Members Posts: 910 Joined: 4-September 06 From: Boston Member No.: 1102 |
Anyone wish to speculate on the 510 and 512 light tone rock/mineral in the SuperCam images? Seems different from the gypsum seams we have seen elsewhere. In the 512 third image, there is a blue surface patch on the rock on the top right. Was this rock blue area where it was in contact with the blue type rock?
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Jul 31 2022, 04:11 AM
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#306
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Senior Member Group: Members Posts: 1043 Joined: 17-February 09 Member No.: 4605 |
The veins are almost certainly enriched in calcium and sulphur but I've not seen anything on the hydration states of past examples (gypsum, bassanite, anhydrite) or enrichments. Extensive analysis of such veins by Curiosity has identified colour changes in veins due to varied fluid flow enrichments of silicon, iron, copper, manganese, chlorine, zinc, magnesium etc. Basically all we can do is exclaim 'oh look, a vein' and wait for the analytical papers to appear.
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Jul 31 2022, 06:00 AM
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#307
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Senior Member Group: Members Posts: 2998 Joined: 30-October 04 Member No.: 105 |
Hard to say about that Sol 510-512 light material/ apparent fracture fill. I do think I see some laser spectrometer zaaps, so we'll soon have spectro data on that material.
--Bill -------------------- |
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Aug 1 2022, 09:13 PM
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#308
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Member Group: Members Posts: 825 Joined: 9-September 17 From: UK Member No.: 8241 |
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Aug 1 2022, 11:01 PM
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#309
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Member Group: Members Posts: 825 Joined: 9-September 17 From: UK Member No.: 8241 |
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Aug 2 2022, 07:28 PM
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#310
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Member Group: Members Posts: 665 Joined: 9-May 21 From: Germany Member No.: 9017 |
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Aug 3 2022, 06:47 AM
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#311
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Senior Member Group: Members Posts: 2428 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
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Aug 8 2022, 11:51 AM
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#312
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Member Group: Members Posts: 665 Joined: 9-May 21 From: Germany Member No.: 9017 |
Sol 520 SuperCam Remote Micro-Imager mosaic with sol 518 Mastcam-Z context.
Four or five of the ten laser holes hit a coating that is presumably hematite (bluish-gray color in this inmage). The crack to the right of the coating is filled with a light-colored material, probably a gypsum vein. A multispectral context is the upper right corner of this image in post #304. |
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Aug 8 2022, 03:55 PM
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#313
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Member Group: Members Posts: 665 Joined: 9-May 21 From: Germany Member No.: 9017 |
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Aug 8 2022, 06:53 PM
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#314
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Member Group: Members Posts: 153 Joined: 8-February 04 From: Phoenix, AZ USA Member No.: 9 |
Sol 513 Mastcam-Z mosaic of left eye multispectral filters 1 to 6 principal components and two corresponding left eye filter 0 raw images (black frames omitted) These are looking like some of the finest-grained sediments yet seen. Important, because organic matter, if present, that was carried by the sediment gravity flows building the delta would be higher in concentration in the deepest, most distal parts of the depositional system. This because of relative lower density, allowing them to remain in suspension for a longer period of time until they are in a part of the lake with lower turbulence, and adsorption and adherence to clay minerals which also remain in suspension longer. Dilute sediment gravity flows, like turbidity currents and hyperpycnal flows, move downslope because of the fine-grained (mud) material in suspension, which creates a density difference with the surrounding ambient water. As this material falls out of suspension and is deposited, the flows slow, and eventually stop. While they are flowing, they can move coarser material (sand and gravel) as bedload and create bedforms (ripples, dunes, antidunes, cyclic steps, and chutes and pools), as well as erode previously deposited material. In modern sublacustrine and submarine fans, turbidity currents can transport fine-grained material and organic material far from its source in deltas and fluvial systems (in the modern Congo/Zaire system >750 km of transport). -------------------- Tim Demko
BioLink site |
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Aug 8 2022, 11:09 PM
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#315
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Senior Member Group: Members Posts: 2998 Joined: 30-October 04 Member No.: 105 |
"Hyperpycnal", now there is a concept that I've not thought of in years, Tim. And you are absolutely correct, this is where organics, and organics adhering to clays, will end up. Organics, and reactions and interactions with the organics.
--Bill -------------------- |
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