[meteorite-list] Re: Meteorite-list Digest, Vol 26, Issue 30 (Scho ner's theory)
From: Steve Schoner <schoner_at_meteoritecentral.com>
Date: Tue Feb 14 11:11:38 2006
-- Norm Lehrman <nlehrman_at_nvbell.net> wrote:
Everything sounds fine till that last couple of
paragraphs where every other proposal also stumbles.
Just where is all this silicate material in our oceans
or atmosphere? I still see a mass balance problem.
I'm open for a good answer, but if you just described
it, I didn't understand.
(I don't know why it did not appear so I post again)
Could the answer be in the total number of tektites that lie in those clay beds? How about the micro-tektites that are scattered all over the oceans sediments? What are the total mass estimates for these? As for the atmospheric silicates, these would fall as dust over a few months or years. The question now is, how small are the smallest tektites? Does anyone know?
Dirk Ross... Do you know?
I suspect that the total tonnage of tektites is quite high, certainly within the possibility as having come from comets.
As for comets, what is the percentage of silicates vs hydrocarbons, and water?
I suspect that the percentage of silicates vs water is small, certainly smaller than is found in the carbonaceous chondrites which are basically silicates, hydrocarbons and a very small percentage of water.
--- Steve Schoner <schoner_at_mybluelight.com> wrote:
> My theory on tektite formation:
> Go back to the impacts of cometary material on
> Jupiter in July of 1994. I think in this there is a
> clear demonstration of how tektites are formed.
> There were huge plumes of plasma extending out into
> space, and large dark clouds of re-condensed dust
> from the impacts after-wards.
> Now, I remember seeing an abstract regarding those
> plumes put out by I think Dr. Shoemaker. In this
> abstract it was posited that the plasma cloud
> achieved temps at nearly a million or more, such
> that water molecules and all organic molecules were
> disrupted so that hydrogen separated from its oxygen
> bonds. Now, it was stated in this abstract that the
> hydrogen escaped out into space but the free oxygen
> remained and fell back with the remnants of the
> plasma plume. In other words, the hydrogen was
> "fractionated" from the oxygen and ejected away from
> the plume.
> Now consider this. Tektites are virtually free of
> water. The remaining cometary plasma was mostly
> vaporized silicates and oxygen, and both were in a
> environment with a paucity of hydrogen which had
> escaped out into space. The rock vapor latched onto
> free oxygen. The result would be a glass with very
> little if any water. And that would explain the
> huge dust clouds (<nano>micro-tektites)remaining.
> But I wonder if any large tektites condensed from
> those plasma plumes and fell into Jupiter's depths.
> No craters were produced, yet huge dust clouds
> floated in Jupiter's atmosphere for months.
> I ran this by Dr. Shoemaker sometime before his
> untimely death, and shortly later he was taken from
> us, thus I never got a response.
> Could such happen here on earth?
> Just imagine a huge cometary impact into our
> atmosphere. A complete disruption, with a plume of
> cometary plasma erupting out into space. Hydrogen
> fractionated from the plasma cloud, the remaining
> silicate material and oxygen re-combining to form a
> glass, and the glass then falling back to earth in
> some cases several thousands of miles form the
> impact point.
> No crater produced because the impact may have
> happened over the ocean, or simply because the comet
> disrupted in the air and never reached the ground.
> Steve Schoner
> Meteorite-list mailing list
Received on Tue 14 Feb 2006 11:09:20 AM PST