Sedimentary films at Opportunity site.

"Thomas Lee Elifritz" skrev i en meddelelse
...
March 21, 2004



He's playing with fire,

You have

actually, and probably doesn't even know it.

This report includes the possibility such transient liquid water films
could exist under current conditions:

TRANSIENT LIQUID WATER AS A MECHANISM FOR INDURATION OF SOIL CRUSTS ON
MARS. G. A. Landis,1 D. Blaney 2, N. Cabrol3, B. C. Clark 4, J.
Farmer5, J. Grotzinger6, R. Greeley5, S. M. McLennan
7, L. Richter8, A. Yen2, and the MER Athena Science Team, 1NASA John
Glenn Research Center, mailstop 302-,
2000 Brookpark Road, Cleveland, OH 44135; ,
2Jet Propulsion Laboratory, 4800 Oak
Grove Drive, Pasadena, CA 91109; 3 NASA Ames, Moffett field, CA;
4Lockheed-Martin Corporation, Denver CO
5Arizona State University, Tucson, AZ; 6Massachussetts Institute of
Technology, Cambridge, MA; 7SUNY at Stony
Brook, Stony Brook, NY; 8DLR, Germany
Lunar and Planetary Science XXXV (2004) 2188.pdf
http://www.lpi.usra.edu/meetings/lpsc2004/pdf/2188.pdf


Bob Clark


Greg Crinklaw wrote in message ...
Robert Clark wrote:

I was referring specifically to images like this:

http://origin.mars5.jpl.nasa.gov/gal...0P2956M2M1.JPG

Look especially at the left side of the image.
I don't recall seeing images of this type previously with the
microscopic imager. The speculation previously about electrostatic
charging for example at the Spirit Gusev site had to do with the
cohesiveness of the surface when the Mossbauer instrument pressed
against the surface, IF you were to assume water was not involved.
Now that we know that the outcrop rocks are sedimentary at the
Opportunity site, images as above may give an indication of the
sedimentary process occurring or ongoing.

Ongoing...? The evidence for water is in the distant past, not now.
Mars is currently a very dry planet that cannot sustain liquid water at
(or even near) the surface. The only ongoing sedimentary process that
could involve water would be deep beneath the surface.

Also, the image you point to is of an outcrop rock poking through the
surface. I see no crust.

--
Greg Crinklaw
Astronomical Software Developer
Cloudcroft, New Mexico, USA (33N, 106W, 2700m)

SkyTools Software for the Observer:
http://www.skyhound.com/cs.html

Skyhound Observing Pages:
http://www.skyhound.com/sh/skyhound.html

To reply remove spleen