[meteorite-list] Re: Tektite pitting

From: Darren Garrison <cynapse_at_meteoritecentral.com>
Date: Sat Mar 26 16:55:21 2005
Message-ID: <2jmb41t6jch04d0me7mhdsi9kvaq2qs475_at_4ax.com>

On Sat, 26 Mar 2005 12:49:08 -0600, "Bob King" <lakewind_at_infionline.net> wrote:
>result of devitrification (or some other sort of erosive action) or were
>these pits formed at the time of creation from escaping gases and water
>vapor?

I say escaping gases. Look at this tektite from my collection (I've had these around 20 years, LONG
before I had any meteorites.) The flow-line run straight through the large pits, even changing
direction slightly within them. That means that the pits had to predate the flow lines. But then
some of the SMALL pits do interrupt the flow lines, meaning that they formed last. I would suppose
the major gas/water packets bubbled out first, then the small ones.

http://webpages.charter.net/garrison6328/tektite_flowlines.jpg
Received on Sat 26 Mar 2005 05:04:48 PM PST