[meteorite-list] Two million-year long meteorite record found in Atacama Desert, Chile
From: Finbarr Connolly <finconnolly71_at_meteoritecentral.com>
Date: Sat, 25 May 2019 14:03:08 +0100
They say the fall rate remained pretty constant over the last 2 million
years. If meteorites were getting buried, the rate would presumably fall
off in proportion to their increasing age. So it looks like they factored
this scenario into their extrapolation.
On Sat, May 25, 2019 at 1:29 PM almitt2--- via Meteorite-list <
meteorite-list at meteoritecentral.com> wrote:
> From what they found it would indicate a fall of one meteorite every
> 4,504 years on a square kilometer. Only problem I see with this, would
> be, there has to be a quantity of meteorites buried beneath the desert
> below their findings. So the rate could be several times higher. Some
> specimens that fell in the area at that time may have come down in
> dust as well leaving no trace.
> Very interesting research none the less.
> --AL Mitterling
> Mitterling Meteorites
> Quoting Paul via Meteorite-list
> <meteorite-list at meteoritecentral.com>:
> > Oldest meteorite collection on Earth found in one
> > of the driest places, Geological Society of America
> > Sciencedaily, May 23, 2019
> > https://www.sciencedaily.com/releases/2019/05/190523130200.htm
> > Earth's Oldest Meteorite Collection Just Found
> > ??in the Driest Place on the Planet
> > By Brandon Specktor, May 24, 2019
> > The paper is:
> > A. Drouard, J. Gattacceca, A. Hutzler, P. Rochette, R.
> > Braucher, D. Bourl??s, ASTER Team, M. Gounelle, A.
> > Morbidelli, V. Debaille, M. Van Ginneken, M.
> > ??Valenzuela, Y. Quesnel, R. Martinez. The meteorite
> > flux of the past 2 m.y. recorded in the Atacama
> > Desert. Geology, May 22, 2019. Open Access
> > https://arxiv.org/abs/1904.12644
> > Yours,
> > Paul H.
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Received on Sat 25 May 2019 09:03:08 AM PDT