Re: Lamination as a tool for distinguishing microbial and metazoan biosystems

From: jonathan (Write_at_Instead.com)
Date: 11/12/04 

Date: Thu, 11 Nov 2004 22:49:53 -0500

"Jo Schaper" <joschapern4ospam@2socketdot.no5net> wrote in message
news:10p60j6hfpq8696@corp.supernews.com...
> jonathan wrote:
>
> > "Nowhere known to me on earth are spherical concretions found in
> > anywhere nearly the concentration we have been shown within the
> > layered substrate in that Martian crater or in adjacent areas
> > where the concretions seem to have weathered (or have been
> > knocked) ex situ.
>
> You must not be familiar with the concentrations of cave pearls,

I've seen plenty of pics of them. And every little bowl
is different from the next one due to different water flow etc.
And none of them have asymetrical features such as a
single aperture or off-center slash, but are highly
symmetrical since they were formed by moving water.
When you show me a collection of pearls all showing the
same unique indentations and covering an area the size of
Wyoming as they do at Meridiani, then we'll talk~

BIOGENIC STRUCTURES FROM A HYPERSALINE LAKE
IN THE BAHAMAS.
http://www.lpi.usra.edu/meetings/lpsc2001/pdf/1068.pdf

"Results and Discussion: Our FE-SEM analy-sis
indicates a range of microbial life forms on the frac-tured
stromatolite surfaces. Spheroidal features are the
most common, with four distinct populations, charac-terized
by their highly uniform intrapopulation sizes:
 The large spheres (Fig. 1) and medium spheres' populations (Fig. 2)
are isolated from each other and the other two smaller populations.
Most of the large spheres have uniform surface indentations.
Most of the medium spheres are clustered together in
aggregates of three or four."

http://marsrovers.jpl.nasa.gov/gallery/all/opportunity_m182.html

"The small and tiny spheres
are closely associated with each other."

http://mars.gh.wh.uni-dortmund.de/mer/opportunity/060/tn/1P133518941EFF0830P2211L5M1_L2L5L5L6L6.jpg.html

"...chemical analysis may provide additional insights
into the origin of the tiny spheres.
Water on the Martian surface may have
formed subtidal pools formed that are similar to Storr's
Lake. Stromatolites, which are essentially bacterial
colonies on an enormous scale, could be the first step
in life's mass aggregation in any environment where
bacteria-like organisms live."

> where
> said pearls coat the floors of rooms many meters square in area, and
> formed when these (usually sandy) cave floors are intermittently flooded
> with calcite rich water. Now, near as we know, these are not aseptic
> locations, and the microbes there can affect the rates at which cave
> pearls form, but the microbes themselves do not create the pearls.
>
>
>

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