[meteorite-list] Moqui Marbles

From: E.P. Grondine <epgrondine_at_meteoritecentral.com>
Date: Fri, 8 Jun 2007 07:59:39 -0700 (PDT)
Message-ID: <121728.4969.qm_at_web36915.mail.mud.yahoo.com>

Hi all -

Are the "moqui marbles" truly analogues for the
"blueberries" on Mars?

On the Earth we have found smaller spheres which are
the product of the condensation of vaporized material
from impacts. These spheres are different from
tektites. Could this mechanism be behind the
"blueberries" on Mars?

In arguing for water precipitation as the fomation
mechanism, the problem would seem to be finding
perfectly spherical gas pockets for the condensation
to take place in. While Moqui marbles have
non-spherical analogues, the "blueberries" on Mars do
not.

Ed


       
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Received on Fri 08 Jun 2007 10:59:39 AM PDT