Exploration of Cape York - Vol 5 - Page 10

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Barsoomer


Posts: 344

Reply: 181



PostPosted: January 21, 2013 2:02 AM 

Veins are thought to be formed by fluid running through cracks where mineral deposits are precipitated and later exposed by erosion.

Do the features in the above image look like that, or do they look like something more? A web-like membrane attached to a vine, perhaps?

Wildcat


Posts: xxx

Reply: 182



PostPosted: January 22, 2013 2:39 AM 

No. 181:

Visually, this "feature" is also present all over the ground at Yellowknife Bay. It is appears visually related with the Vermillion mystery rock, newberries, the newberry pads, and the tan-colored "Rover plastic" observed on the ground at Rocknest that they later said was actually from Mars.

Look closely. Look for patterns. The center mass is usually where two triangular lines intersect. >

The black hangy things on the Vermillion rock look quite similar to the rover plastic. Look at the MAHLI rover plastic picture. At the bottom, it looks like it had a stem that was attached to something else at one time.

Wildcat


Posts: xxx

Reply: 183



PostPosted: January 22, 2013 2:51 AM 

No. 181:

That feature is also present all over the ground at Yellowknife Bay and on the Vermillion rock.

The center of mass is clearly biological. Even moreso when one considers this "eroded rock" is present in numerous areas on the planet with essentially the same symmetrical features.

Life has that quality, not rocks.

Look closely. Look for patterns. Look for symmetry. A common pattern is > < and these rocks are slightly elevated kind of like a horseshoe crab shell.

Wildcat


Posts: xxx

Reply: 184



PostPosted: January 22, 2013 2:57 AM 

Argh, it interpreted the pattern as HTML.


**************** wildcat

I changed the < (less than) to &lt; and the > (greater than) to &gt; in your comment. Always a good idea when they are in comments on this blog.

**************** hortonheardawho

kevin


Posts: xxx

Reply: 185



PostPosted: January 24, 2013 10:09 AM 

Oppy enters its 10th Year on the Planet Mars what an outstanding and totally unexpected achievement!

Congratulations JPL/NASA!

[link] ?cid=dlvr.it

hortonheardawho


Posts: 3465

Reply: 186



PostPosted: January 25, 2013 8:29 AM 

Sol 3200 ( Jan 24, 2013 ) MI closeup panorama of Whitewater Lake:

Three thousand, two hundred sols of fun in the back of the Oppy bus.

If the mineral in the raised veins is gypsum with a hardness of 2 then which minerals ( other than clays ) are soft enough ( < 2 ) to have eroded away?

Would an identification of the fill mineral as gypsum prove that the matrix mineral is clay?

Er, about those new berries...

Barsoomer


Posts: 344

Reply: 187



PostPosted: January 25, 2013 3:44 PM 

Horton, thanks for you 186. I've been looking forward to seeing a good rendering of the vein area.

Very astute observation about the clay/hardness issue. The matrix does look very friable. For example, the partial covering on the apparent raised plate of vein material (middle of top-right quadrant) looks almost like dirt or soil compared to the smoothness and cohesiveness of the vein material.

Barsoomer


Posts: 344

Reply: 188



PostPosted: January 25, 2013 4:09 PM 

In the last of Horton's 3-D pairs, the presumed gypsum is perforated by numerous holes.

Recall that one of the MIs taken at Greeley Haven had a white coating with holes also. I wonder what caused the holes?

marsman


Posts: 303

Reply: 189



PostPosted: January 26, 2013 1:38 PM 

This is where the Microscopic Imager would come in handy. A number of years ago, ups and mann provided these snapshot pictures with regards to the possible 'rock hole makers'.

/R

marsman

Barsoomer


Posts: 344

Reply: 190



PostPosted: January 28, 2013 12:19 AM 

The upper rock area appears to be actively eroding in some non-aolian way.

Barsoomer


Posts: 344

Reply: 191



PostPosted: January 28, 2013 10:52 AM 

...or maybe soil-like debris was dumped on top of existing rock.

Barsoomer


Posts: 344

Reply: 192



PostPosted: January 29, 2013 4:30 PM 

http://www.spaceflightnow.com/news/n1301/25opportunity/

Interview with the Principal Investigator.

hortonheardawho


Posts: 3465

Reply: 193



PostPosted: January 29, 2013 6:43 PM 

Sol 3205 ( Jan 29, 2013 ) 3D enhanced difference false color of rock bed with outcrop of new berries?:

with approximate location links.

Looks like the work on Whitewater Lake is finished and Oppy is moving to a nearby outcrop which may have a new berry "vein".

If I were driving I would go back to the original area of discovery - but I'm not.

I wonder if the somewhat conical shape of the area of "blue" rock ahead is accidental?

John


Posts: xxx

Reply: 194



PostPosted: January 30, 2013 3:11 AM 

Hort ...ref your reply 186. Gypsum is very soft. If these are gypsum veins, the surrounding "rock" is much softer. I have tried to find a concise definition of rock and stone. The "rock" looks like dried mud to me. What is the difference in dried mud and rock. Can mud turn to rock in a day? (I'd mentioned before Dad pulled the anchor up once, and dribbled blackish mud on the gas tank of the boat.) It dried to a dark grey and never DID come off, it was VERY hard, even after many wettings. Did the mud turn to rock, was it glue? I guess what I"m asking, what is real rock and under what conditions does it take to form proper sedimentary rock, vs layers of dried mud?

Barsoomer


Posts: 344

Reply: 195



PostPosted: January 30, 2013 3:25 PM 

The berries seem to be associated with branching ridges. The ridges seem unlikely to be wind tails because of the complex structure. They may be veins covered by matrix or other materials. There are more obvious veins nearby.

Barsoomer


Posts: 344

Reply: 196



PostPosted: January 30, 2013 10:35 PM 

Parallel-eye stereo to exaggerate the 3-D effect.

We see a pyramid-like structure with numerous ridges. The ridges have berries attached to them.

There seem to be other similar structures nearby.

hortonheardawho


Posts: 3465

Reply: 197



PostPosted: January 31, 2013 8:12 AM 

Sol 3207 ( Jan 31, 2013) colorized MI closeup of berries in bedrock:

with location link.

These berries don't look much like the new berries:


Kye Goodwin


Posts: 1166

Reply: 198



PostPosted: January 31, 2013 11:25 AM 

Horton, Thanks for your 196 and particularly for drawing our attention to the variety of spherules that have turned up at Cape York. A variety of spherule shapes were seen along the traverse from Eagle Crater to Cape York, for example these mostly lumpy ones:

I find the contention that the "newberries" of Cape York are a completely different phenomenon than the Meridiani spherules to be poorly supported by the evidence. The newberries, from a single APXS investigation, have been declared chemically different from the Meridiani spherules, but how much do we really know about the chemical variability of the spherules along the traverse? They were tested at Eagle Crater, Berry Bowl Full vs Berry Bowl Empty, but how many more times were they tested? Were attempts made to determine the chemistry of the unusual-looking varieties? I don't think so.

So now we've got spherules in Copper Cliff, and in Whitewater Lake and in the Meridiani "sandstones". The Athena Team will probably come up with three different explanations, but I'm still going with Occam: they all have a common origin.

Barsoomer


Posts: 344

Reply: 199



PostPosted: January 31, 2013 3:43 PM 

Interesting contention, Kye.

One point to consider is the orbital data. This shows a strong hematite signature in the Meridiani Plains that has been attributed to the blueberries. The hematite signature is lacking on Cape York.

Another point is, as I recall, there was a method to detect blueberries based on the Pancam filter response. I think Winston was able to duplicate that method. It might be interesting to apply that to these new types.

Barsoomer


Posts: 344

Reply: 200



PostPosted: January 31, 2013 10:07 PM 

http://www.lpi.usra.edu/meetings/lpsc2013/pdf/2294.pdf

Indicates Mn is enhanced in the coatings on Whitewater Lake rocks.

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