Larger Grains Suggest Presence of Fluid

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Opportunity







PostPosted: March 2, 2004 4:28 PM 

The image, taken by the microscopic imager on the Mars Exploration Rover Opportunity, shows an extreme close-up of the "El Capitan" region, part of the rock outcrop at Meridiani Planum, Mars. As seen in panoramic images of "El Capitan," this region appears laminated, or composed of layers of firmly united material. The upper left portion of this image shows how the grains of the region might be arranged in planes to create such lamination.

At the upper right, in the zone surrounding two larger sphere-shaped particles, this image also shows another apparent characteristic at the scale of individual grains. The granularity of the matrix -- the rock in which the spherules are embedded -- is modified near the spherules compared with grains farther from the spherules. Around the upper spherule, the grain size is increased. This change in grain size might represent a "reaction rim," a feature produced by fluid interaction with the matrix material adjacent to the spherule during the growth of the spherule.

Image credit: NASA/JPL/US Geological Survey

Max Harrell


Posts: 1

Reply: 1



PostPosted: March 5, 2004 10:00 PM 

Looking at pictures of the small spherules, they seem to have a structure to them. Can anybody explain this?

chaosman


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Reply: 2



PostPosted: March 6, 2004 2:15 AM 

Maybe hey are fossils/lifeforms ?

Look around in the forum.

A lot of people noticed it...
...and I bet NASA did, too.

disillusionednucleus


Posts: 1

Reply: 3



PostPosted: March 6, 2004 3:34 AM 

Might be erosional processes (e.g. hydraulic action), possibly implying presence of water... or even footprints of alien life?

danajohnson


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Reply: 4



PostPosted: March 6, 2004 4:36 PM 

I suspect this what you state as the spheres separate hydrogen and build pyrite grains from hydrogen sulphide, combining it with the iron from the water which is transported into the sacs(spheres) through silicic acid conditioned waters charged with carbondioxide. The result is pyrite from iron sulphide and silica grains and hydrogen gas combined with the double oxygen from the carbonates. The carbon is left hanging as I have to leave for work. This sphere produces it's own water and pyrite and silica grain combination. I am sure there are other chemical fuel cell process details-The carbonate waters are from the venting at the site, and the hydroxides are from the ash deposits as are the silicic acid. There are three or four metals here involved and sources of energy for the 'plant'. Hydrogen sulphide charged carbonate vents are easy to imagine and ash would supply everything else except the iron which comes through the water in a low oxygen condition.
They are basically the fuel cells for the larger structure, and together they produce water.

danajohnson


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Reply: 5



PostPosted: March 6, 2004 4:43 PM 

clipped the front of my statement once again with an attempt at a typo correction- I'll correct it on my other thead Structure of the Spherules tomorrow. I haven't figured the metals involved as NASA may have the figures somewhere and I haven't found them as yet. It's amazing what the planet Mars will provide for an industry someday.




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