[meteorite-list] Formation age of meteorites -
From: HARRY WOOD <HARRYWOOD1_at_meteoritecentral.com>
Date: Thu Apr 22 09:37:31 2004
This sounds a little like Velakovsky....planets in collision? Have any of
you read any of his theories? Harry W Wood
----- Original Message -----
From: "E.P. Grondine" <epgrondine_at_yahoo.com>
Sent: Tuesday, December 05, 2000 10:03 AM
Subject: [meteorite-list] Formation age of meteorites -
> Hello all -
> In the last couple of days we have seen the
> establishment of the dates of 2 phenomena, both of
> which seem to have occured 3.9 Gya - first, the late
> period bombardment on Earth, and second, the end of
> sedimentary processes on Mars.
> While it has long been put forward that the
> asteroids condensed out of a non-uniform disk, and
> that further these asteroid parent bodies
> differentiated through gravity, the differences in the
> types of meteorites found is so great as to lead me to
> suspect this explanation...
> If I remember correctly, a number of shock
> features associated with the age of formation of
> meteorites are dated around 3.9 Gya.
> A thought experiment, if you will: Add together
> the estimated masses of the asteroids into a parent
> body. Assume a comet of the magnitude and velocity of
> Shoemaker-Levy strikes this parent body - to make it a
> little more fun, call this parent body planet x -
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Received on Tue 05 Dec 2000 07:27:17 PM PST