QUOTE (SigurRosFan @ Feb 9 2006, 08:36 PM)
Interesting excerpts:
...
"... some spherules are surrounded by a later generation cement. This requires multiple episodes of groundwater percolation following sand deposition." - Where are images of this spherules type?
...
Which abstract is this in?
I have argued that crusts seen in the MI images at the Opportunity site have the appearance of biological or sedimentary origin:
================================================
Newsgroups: sci.astro, alt.sci.planetary, sci.geo.geology, sci.geo.mineralogy, sci.bio.misc
From: rgregorycl...@yahoo.com (Robert Clark)
Date: 18 Mar 2004 16:26:04 -0800
Subject: Sedimentary films at Opportunity site.
I can't think of any way of producing films or crusts like these other
than through liquid water deposition or biological activity:
Microscopic Imager :: Sol 049 (14 images)
http://origin.mars5.jpl.nasa.gov/gallery/a...unity_m049.htmlMicroscopic Imager :: Sol 050 (12 images)
http://origin.mars5.jpl.nasa.gov/gallery/a...unity_m050.htmlBob Clark
================================================
You may need to rotate some of these images to properly view positive and negative relief.
And Shaka on this board posted an MI image of Home Plate that showed a similar crust-like deposition:
- Bob