Mount Sharp - Extended Mission 1 - Page 47

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LWS


Posts: 3062

Reply: 921



PostPosted: July 5, 2015 4:57 PM 

Frost? Snow? Manna (LOL)?

Winston

LWS


Posts: 3062

Reply: 922



PostPosted: July 5, 2015 9:21 PM 

Sol 1034

3D of two Chemcam images

Fine structure of a vein on a rock surface

Looks kinda biological to me.

Winston

LWS


Posts: 3062

Reply: 923



PostPosted: July 6, 2015 8:35 PM 

Sol 1031

I think this is a spectacular 3D debris flow with veins, clays, etc.

View in stereophotomaker.

LWS


Posts: 3062

Reply: 924



PostPosted: July 8, 2015 9:17 PM 

A new formation from sol 1037. It shows a debris flow and a vein associated with blue "tendrils"

This is a 1.5X magnification. View central area at different magnifications with stereophotomaker.

Wonder what those "tendrils" really are? different veins? filaments made up of spheres? minerals?

Winston

LWS


Posts: 3062

Reply: 925



PostPosted: July 10, 2015 8:02 PM 

I've been collecting curiosity images of rocks with grooves. Some have been quite strange with practically inexplicable grooves that defy rational explanation.

This one from sol 1039 is probably the most strange one so far.

How did those grooves get there? I was thinking earlier that the grooves might have been formed by veins that somehow became dislodged from the matrix on which they formed. That explanation does not work for this one.

What made these grooves>

Winston

LWS


Posts: 3062

Reply: 926



PostPosted: July 10, 2015 8:22 PM 

Sol 1039 has some other interesting images. Curi has been doing a lot of crushing and dislodging rocks recently showing what is underneath some, notably the disturbed soil that differs in colouration from the surface soil.

Here's a crop from a sol 1039 image that shows imho, damp soil that has stuck onto the surfaces of a number of dislodged and crushed rocks.

Winston

LWS


Posts: 3062

Reply: 927



PostPosted: July 10, 2015 8:27 PM 

Last one tonight!

Here's a crop from the above image which I think shows what might be regularly spaced spore bodies in the soil from around the crushed rocks

Winston

Masebo


Posts: xxx

Reply: 928



PostPosted: July 11, 2015 5:59 AM 

Nice collection of sea shell shapes in the foreground.

Only wind shaped rock? A pity Nasa isn't interested in finding out.

Mazebo


Posts: xxx

Reply: 929



PostPosted: July 11, 2015 6:05 AM 

Nice collection of sea shell shapes in the foreground:

Only wind shaped rocks?
A pity NASA isn't interested in finding out.

LWS


Posts: 3062

Reply: 930



PostPosted: July 11, 2015 8:35 AM 

Masebo;

Nice ones above.

I suspect they are now trying to make up lost ground with the sol 1039 investigations where they seem to be at last trying to look in the subsoil areas.

I suspect they have seen some images that suggest they have been on the wrong track for a long time. Wind erosion could not have caused the grooves seen in some of the upturned rocks that were evidently covered in sand before curi dislodged them. I suspect that current water and microbial action are the main causative factors. Hopefully they will pursue that possibility vigorously.

Winston

LWS


Posts: 3062

Reply: 931



PostPosted: July 11, 2015 8:42 AM 

Masebo;

I will post some perhaps even better images with sea shell shapes as soon as I find them. I processed them a few days ago but neglected to post them then. What is interesting about those shapes, which will certainly be passed off as only pebbles, is not only their external smooth shapes but that some of them have been cracked revealing their hollow nature inside.

Winston

LWS


Posts: 3062

Reply: 932



PostPosted: July 11, 2015 9:08 AM 

Masebo; Here's the image from sol 1032

Winston

LWS


Posts: 3062

Reply: 933



PostPosted: July 11, 2015 2:27 PM 

Here's an image from sol 1037.

I think this is the best image so far showing the sloughed off crust and the subsurface area that appears damp.

Look at it in stereophotomaker at 200%. The subsurface looks kinda fertile.

Winston

Mazebo


Posts: xxx

Reply: 934



PostPosted: July 11, 2015 4:07 PM 

LWS, Re your 932:

Wow, what a find!
I believe this is as close to a smoking gun for biological life on Mars we'll ever come.
It's very hard to see these forms as anything other than shells.
Let's hope you're right about NASA shifting focus!

LWS


Posts: 3062

Reply: 935



PostPosted: July 11, 2015 7:27 PM 

Mazebo;

Thanks!

Here's a 3D of the rock in my reply #925.

The grooves can now be more clearly seen. There are a number of them, randomly positioned, unlikely to have been produced by wind action or water action since they are not in depressed areas where water would have settled. They are also some which are degenerating into holes. No pebbles can be seen from which the holes or grooves might have originated.

What agency produced them?

LWS


Posts: 3062

Reply: 936



PostPosted: July 11, 2015 9:31 PM 

Here's a 3D of a beautiful sol 1034 image showing holes, veins, etc.

View in stereophotomaker at varying magnifications. Lots to see there.

Winston

Barsoomer


Posts: 344

Reply: 937



PostPosted: July 11, 2015 11:40 PM 

Re the grooves: Maybe there were ice lenses in the rock that sublimed away when the interior became exposed?

LWS


Posts: 3062

Reply: 938



PostPosted: July 12, 2015 5:16 PM 

Barsoomer;
I suppose that is a possibility.

Did you notice that a number of the rocks around sol 1041 appear to be quite anomalous, at least one having the appearance of having been the template for some of the peculiarly grooved and curved rocks of nearly 100 sols earlier?

Kye Goodwin


Posts: 1166

Reply: 939



PostPosted: July 15, 2015 12:46 AM 

LWS, re the grooves, 935, to me some have the look of chambers that were once inside the rock, that have now been cut through by erosion. What could accomplish the tidy erosion is a mystery as usual.

I've been puzzling over this especially "rough" ground:

I'm pretty sure these scenes are undisturbed by the rover but they look at first glance like the ground was just dug up. It sure doesn't look like everything bigger than sand has been lying here patiently for millions of years being slowly ground down by the wind. There are some sand tail (sand shadow) like structures among these rocks, like bottom center in the second image against the biggest rock. Has sand ever drifted across this assemblage? If it has it seems that more sand should have been permanently trapped in the nooks and crannies. I'm thinking lately that loose rocks are getting moved around on a scale of time much shorter than that needed for significant wind erosion. And I'm starting to have an inkling what process could accomplish this:

The slides usually seem to be moving nearly pure sand, but occasionally we get to see granules and pebbles that have come along. Often there are lots of pebbles on slopes very near to slope activity. In both these images there are pebble concentrations that appear to rest on steep sand slopes. In both images look to the upper left corner. I count four slides in each image. None involves the pebbles that I'm talking about, but it seems to me that there is so much scattered downslope movement nearby that pebbles must get moved fairly often in sand slide events. This should soon (on a geologic time scale) deplete the supply of unstable pebbles available to move downward, so where are they coming from?

The subsidence trenches, unlike the slides, seem to be moving pebbles down into the ground in lots of places:

Maybe pebbles go down and get reduced to sand and dust which is then sent back up to the slide locations.

Kevin


Posts: xxx

Reply: 940



PostPosted: July 15, 2015 6:08 AM 

Half of this rock seems to be coated in what looks like Nikel I can't work out why it seems to end in such a straight line to the rough part of the rock.

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