[meteorite-list] Chondrule formation mechanism (Info Please)

From: Mr EMan <mstreman53_at_meteoritecentral.com>
Date: Tue Oct 24 00:38:11 2006
Message-ID: <20061024043807.50543.qmail_at_web51012.mail.yahoo.com>

--- "E.P. Grondine" <epgrondine_at_yahoo.com> wrote:

 The problem still remains what caused sufficient
 number of atoms of the same type to be in the same
 place at the same time to produce the crystals and
 glasses observed.

I think crystal formation in a fluid preceded the
choundrule formation. Seems standard mineralogy and
crystalography answer the how. The proto planetary
disk was a fluid. Molecules of a feather flock
together even in low gravity fields. Each undefined
circuit through time and space was another opportunity
for like molecules to sort themselves onto a latice.

Whatever duration this crystal formation epoch
existed, it seemes to have been abruptly forclosed to
subsequent growth.(e.g. Depletion of the stock of
molecules by a sweeping solar megawind that sorted the
natural abundance of the elements in the solar system
based on atomic weight?)

One current theory is that a period of intense
mega-lightening 500 million miles long flash-melted
the chondrules. If this were the case perhaps the
vitrified spherical globs slowly restored the crystal
lattice within the confines of the sphere.

I think this is a part of the answer but not the whole
story.

Elton
Received on Tue 24 Oct 2006 12:38:07 AM PDT