[meteorite-list] Meteorites Hold Clues To Early Solar System

From: S.Singletary <jumper_at_meteoritecentral.com>
Date: Thu Apr 22 09:54:07 2004
Message-ID: <5.0.2.1.2.20020221122350.00a85228_at_hesiod>

I just read the Feb. 8 Science paper, literally poured over it and I didn't
find any mention of dating pieces of the CAIs. It dealt mostly with oxygen
isotopes and some important stuff came out, but no date information. What
chronometer did they use? U-Pb? If so, did they do the perovskites? Is it
possible the article reference was in error?



At 08:21 AM 2/21/2002 -0800, Ron Baalke wrote:


>http://starbulletin.com/2002/02/19/news/story13.html
>
>Meteorites Hold Clues To Early Solar System
>By Helen Altonn (haltonn_at_starbulletin.com)
>Honolulu Star-Bulletin
>February 19, 2002
>
>UH scientists report that planets may have formed very quickly
>
>Mineral findings in two meteorites studied by University of Hawaii
>scientists and mainland colleagues may change thinking about the solar
>system's age.
>
>If their analysis of two major components is correct, "the whole idea about
>the chronology of the solar nebula can be wrong," said Alexander Krot,
>associate researcher at the Hawaii Institute of Geophysics and Planetology.
>
>The researchers have dated one component at 4.568 billion years, plus or
>minus 1 million or 2 million years, and they will try next to define the
>absolute age of the second major component.

Steven Singletary
54-1224
Dept. Earth, Atmospheric and Planetary Sciences
M.I.T.
Cambridge, MA 02139
Tel - 617.253.6398
Fax - 617.253.7102
Received on Thu 21 Feb 2002 12:27:02 PM PST