Sedimentary rocks at the Spirit site?
Steve Squyres during yesterday's conference said they intend to look for sedimentary rocks at Gusev as well.
Here's one possibility:
Raw images to form your own color combinations:
Panoramic Camera :: Sol 026 (51 images)
http://origin.mars5.jpl.nasa.gov/gallery/all/spirit_p026.html
Bob Clark
