[meteorite-list] Re: Tektite pitting

[Sterling K. Webb]

Hi, Darren,

    As kids say on the internet, "KEWL!"   I think most of the flowlines are strain lines or stretch
lines that date to the plastic phase, but there's one near the top of the object that is a true
"channel." Notice how many pits are elongated in the direction of the lines that cross them? Streeeetch!

    Really nice picture. If it had a black backround, I say, "Which moon of Saturn is that, now?"

Sterling Webb
---------------------------------------------
Darren Garrison wrote:

> 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
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