South Endeavour Crater - Page 8

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Author Message
LWS


Posts: xxx

Reply: 141



PostPosted: July 10, 2017 11:30 PM 

Barsoomer;

Your reply 140 image has a feature that looks most interesting. It might just be dust but it resembles a fungal surface growth.

Hope Oppy can get a little nearer to the micro channels.

Winston

John Radogno


Posts: xxx

Reply: 142



PostPosted: July 11, 2017 10:45 AM 

Winston,
Great stereo image in #141! Looks like there are three waves of raised rock-bed. The micro channels are interesting but I am not sure what to make of the dust.

This has interesting low angle sun light that lights up some interesting details:

Barsoomer


Posts: 344

Reply: 143



PostPosted: July 12, 2017 8:55 PM 

It has been a long time since we last had MI images. Note the rounded pebbles, which suggest transport in a stream. Also interesting are the two bud-like projections from one of the pebbles.

LWS


Posts: xxx

Reply: 144



PostPosted: July 13, 2017 1:23 PM 

Barsoomer; here's a montage of the MI images of soil taken on sol 4787. Except for the absence of blueberries, the resemblance to the early Oppy images is quite striking.

Winston

Barsoomer


Posts: 344

Reply: 145



PostPosted: July 13, 2017 9:55 PM 

Winston, thanks for that montage. Yes, I think we saw similar images earlier, perhaps in Endurance Crater.

By the way if those MIs are rotated through 90 degrees, then every second one is a stereo partner of the previous one.

LWS


Posts: xxx

Reply: 146



PostPosted: July 14, 2017 11:32 PM 

Barsoomer;

Here's a 3D take on two of today's images.

Note especially the numerous small filamentous rocks in the lower portions of the 3D. I don't recall seeing such before.

Winston

Barsoomer


Posts: 344

Reply: 147



PostPosted: July 14, 2017 11:34 PM 

Top left: Did something shear off the tops of those rocks? Perhaps, a moving glacier fragment?

Circular Ring: Perhaps where a glacier came to rest?

Barsoomer


Posts: 344

Reply: 148



PostPosted: July 18, 2017 12:09 AM 

Bottom right. Reminds me of some of the rocks we have seen at the Curi site.

Barsoomer


Posts: 344

Reply: 149



PostPosted: July 27, 2017 1:03 AM 

Stereo x-eye closeup. Note the mud-like film over pebbles (center of image).

LWS


Posts: xxx

Reply: 150



PostPosted: July 27, 2017 11:27 PM 

Barsoomer;

V-nice 3D at reply 148!

Seen any veins?

Winston

Barsoomer


Posts: 344

Reply: 151



PostPosted: July 28, 2017 10:47 PM 

Haven't seen any veins at this location. Lots of fractures but no fill.

Barsoomer


Posts: 344

Reply: 152



PostPosted: August 4, 2017 10:57 PM 

At the microscopic level, some veins and other intricacies.

Mini-berries and chopped off stalks?

LWS


Posts: xxx

Reply: 153



PostPosted: August 5, 2017 8:16 AM 

Barsoomer;

Beautiful 3D!

I wonder if these mini-veins and apparent lack of normal sized veins says anything about the age of the formations?

Winston

Barsoomer


Posts: 344

Reply: 154



PostPosted: August 5, 2017 8:28 PM 

Winston, my opinion is that this is a small remnant of the ancient surface of the rock, which may originally have been similar to Kirkwood in the Matijevic formation.

I think the rock may have subsequently been sheared by ice and covered with dust, erasing most of the ancient surface.

John Radogno


Posts: 37

Reply: 155



PostPosted: August 5, 2017 11:43 PM 

Barsoomer,
I think you may be right, but still, the mini-berries and stalks are not fully explained. We have seen a lot of similar features and it is possible that wind erosion forms these features (when they all tilt in the same direction), but biogical mechanics are still possible.

LWS


Posts: xxx

Reply: 156



PostPosted: August 6, 2017 10:11 PM 

Some Oppy composites came down today.

Here's one that I processed

I think re. colours and impression of recently flowing surface water, this is the strangest Oppy image I've processed.

Barsoomer, John:

Some feedback please!

Winston

LWS


Posts: xxx

Reply: 157



PostPosted: August 6, 2017 10:38 PM 

Here's the other one of the above series;

Looks just as strange but with a few more miniberries.

Winston

LWS


Posts: xxx

Reply: 158



PostPosted: August 6, 2017 10:41 PM 

OOps

should have been this one below.

Winston

Barsoomer


Posts: 344

Reply: 159



PostPosted: August 6, 2017 10:41 PM 

Hi Winston. I was stumped by that one. Not sure how recent the last bit of water was. A lot of gravel deposited by earlier flow, some of which has been altered by later flow.

I'm not sure how the gravel is related to the channel shown here:

which I think shows gradually diminishing flow with some ice floes thrown into the mix.

It would be nice to see a panorama that shows the relationship of the individual images.

Barsoomer


Posts: 344

Reply: 160



PostPosted: August 8, 2017 10:52 PM 

Crop from a hazcam: "Hinged Rock." While we wait for something more substantial...

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