"mlm" wrote
The new colour panorama of the outcrop lends even more depth to the
structure -- it is much too "red" though don't you think.

I noticed that the Sol 4 images finally used some of the other filters,
specifically the red ones instead of just infra-red. Here's a straight
composite of the L4, L5 and L6 filtered images (r,g,b) of a section of the
outcrop. It's just a mechanical composite without changing anything, so not
saying it's "true" color, but still a different one:

http://www.copperas.com/astro/bedrock_rgb.jpg

Questions to geologists: are they still calling it bedrock? If so what is
the definition of that? Seems like they were saying it could be volcanic or
even wind-blown deposits. Is that defined as bedrock? Also, they were saying
that this is the first discovery of bedrock on Mars, but Dr. Squyres said
yesterday that the outcrop is just a small piece of a vast sheet the size of
Oklahoma, lying just under the surface. How do they know that if bedrock has
not been discovered before?

Joe