YellowKnife Bay - Page 9

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RJS


Posts: 125

Reply: 161



PostPosted: February 7, 2013 7:46 AM 


I would agree Winston, looks wet and certainly not powder. Therefore we may never know what's in this cement. As per JPL's quote on Feb 4th; "The mini drill test will use both the rotary and percussive actions of the drill to generate a ring of rock powder around a hole. This will allow for evaluation of the material to see if it behaves as a dry powder". suitable for processing by the rover's sample handling mechanisms.

Mizar


Posts: 692

Reply: 162



PostPosted: February 7, 2013 11:19 AM 

Some OT (needless to start a new thread yet) but this could be a big event. Could Curiosity act as a comet observatory?

[link]

LWS


Posts: 3062

Reply: 163



PostPosted: February 7, 2013 11:29 AM 

testing

LWS


Posts: 3062

Reply: 164



PostPosted: February 7, 2013 10:40 PM 

test

Wildcat


Posts: xxx

Reply: 165



PostPosted: February 7, 2013 11:26 PM 

It reminds me of peat.

Also, not the Interesting larva-shaped rock:

John Henry Dough


Posts: xxx

Reply: 166



PostPosted: February 9, 2013 5:23 PM 

For the biggest part the ""lifers '' have went to sleep.
Not life as we have ever known it, but never the less Life.

:let the beat roll on.

MPJ


Posts: xxx

Reply: 167



PostPosted: February 10, 2013 7:01 AM 

John, not really sleeping but a little bored out for my part. At least certain visual observations in this rather boring landing site are quite promising but as long as the MSLers don't bother to use their assets properly this will stay a touristic geologic voyage as usual except Viking and Phoenix.
Meanwhile I would say nobody except a few hardcore "Martians" at NASA and eg UMSF would notice if the MSL would vanish for whatever reason. Confused

But we will stay tuned if there is something happening or wake up when the ExoMars program will start its missions on Mars. Smile

John Henry Dough


Posts: xxx

Reply: 168



PostPosted: February 10, 2013 7:35 PM 

Why are there so few of us?

I would love tyo hear your (or anyones) thoughts on

Quote"
are quite promising but as long as the MSLers don't bother to use their assets properly this will stay a touristic geologic voyage as usual except Viking and Phoenix
End Quote.

I must admit I don't come here often simply because I am depressed there are so few posters.
Both Sad and Tragic.
What in hell do young people follow these days?
I too am one of the last martians.

Yes in a week or so the pace should pick up,
the bugs should be worked out and the operators should by now be at least a bit more efficient at MSL data gathering.
jd.

LWS


Posts: 3062

Reply: 169



PostPosted: February 11, 2013 6:44 PM 

Wildcat; I thought that you would have noticed them by now but look at this sol 182 image;

Do you see any recognizable shapes in the crud removed from the borer hole? There are scores of them of various sizes that appear to closely resemble the plastic like unidentified object found by curi in the early stages of the gale crater odyssey?

I think that some closeup MAHLI images are in order but I won't hold my breath.

Winston

Mark Wilson


Posts: xxx

Reply: 170



PostPosted: February 12, 2013 4:56 AM 

That is a close up image taken with MAHLI

kevin


Posts: xxx

Reply: 171



PostPosted: February 12, 2013 5:54 AM 

Excellent explanation on the shiny car door handle recently spotted:

http://mars.jpl.nasa.gov/files/mep/ventifacts.pdf

MPJ


Posts: 250

Reply: 172



PostPosted: February 12, 2013 6:51 AM 

"Excellent explanation" Yes - this way you can explain all feature along those lines on Mars the easy way without using precious instrument time... Smile

One question remains: why are geologists allowed to use the "it looks like fact" so self evident to identify stuff while biologists are not nearly free to do so. Are biologist the better scientists? Razz

Barsoomer


Posts: 344

Reply: 173



PostPosted: February 12, 2013 3:59 PM 

The explanation sounds good, but if one examines it closely, it doesn't really make sense.

The "car door handle" feature has shiny objects on pedestals. The explanation is basically saying that the pedestals are "wind tails" where the shiny resistant object protects the less resistant tail material from erosion. Note however that a vertical wind tail implies a persistent DOWNWARD wind, which seems unlikely.

None of the Earthly examples in the pdf look anything like the Mars feature in question.

This may indeed be a case of differential erosion, but what is really required is that the pedestal material must independently be more resistant to erosion, which begs an independent explanation.

RJS


Posts: 125

Reply: 174



PostPosted: February 12, 2013 5:04 PM 


What I don't understand is why arn't they going in for a closer look? And instrument testing?

John Henry Dough


Posts: xxx

Reply: 175



PostPosted: February 12, 2013 6:42 PM 

When something expands upward on Earth..it
does this under one Earth Gravity.
We are not on Earth,things are different and
different ways of understanding MUST be found.
jd

kevin


Posts: xxx

Reply: 176



PostPosted: February 13, 2013 5:16 AM 

Stunning shot! Twilight at Gale Crater with thanks to Paul at The Meridiani Journal:

newboy


Posts: 1

Reply: 177



PostPosted: February 13, 2013 11:01 AM 

I know those of you who are fascinated by patterns on Mars will be intrigued by this short paper:
www.lpi.usra.edu/meetings/lpsc2012/pdf/1652.pdf

hortonheardawho


Posts: 3465

Reply: 178



PostPosted: February 13, 2013 1:48 PM 

newboy, thanks for the paper in reply 177.

It's good to see some "real" geoscience modelling.

I wonder how the successful model is on earth polar patterned ground?

Wonder if the model can be used to calculate the soil ice content from the percent of rocks on the boundary? ( in the limit as time goes to infinity )

It model reminded me of some of the fun and games I had writing a 3D, 3 component, 3 phase thermal black oil model 30 some years ago.

Mauree


Posts: xxx

Reply: 179



PostPosted: February 13, 2013 11:28 PM 

I agree with reply 173. Furthermore if its wind erosion, why all rocks around it do not show the same "smoothness" . In fact, that smoothness is shown in many stones in the Antarctica pic for example, as one would expect.

MPJ


Posts: 250

Reply: 180



PostPosted: February 14, 2013 7:33 AM 

Did they stumbled across a patch of (crater-) lichen - maybe fossilized - which is partially sticking out of the dust layer on the bedrock?

MC100:

ChemCam:

More images available...

Wonder what the ChemCam came up with while zapping the area. Smile

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