[meteorite-list] Periodicity of Falls?

From: James O,Roark <jamesoro_at_meteoritecentral.com>
Date: Thu Apr 22 09:42:01 2004
Message-ID: <003d01c081a5$87c51140$b0930118_at_dnpt1.occa.home.com>

Hi,

Just wondering, there is a periodicity to the collision of cometary
debris with the earth and to large, mass extinction causing, impact
events. Since it is apparent that groups of meteorites come from
specific parent bodies as a result of impacts on those bodies, could
there be a periodicity to the falls of those materials as the earth
encounters each impact's debris stream? Perhaps analysis of the
cosmic ray exposure ages would give us the age of the particular
impact event for each group of meteorites and estimations of fall dates
could lead to predictions of the next achondrite fall for example :-).

Or is the data too scarce.....

Jim
Received on Thu 18 Jan 2001 06:22:30 PM PST