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Re: Source of KT asteroid pdf
Beat me to it. Another helpful factor is that the velocity change needed
to drop things closer to the Sun is actually lower in the EK Belt than
in the Main Belt.
Iridium is a pretty clear signal that it was an iron-rich asteroid, so
icy cometoids might be out of the picture. I have heard there might be
evidence of more than one impactor.
What about all you Dino Doctors? Who believes the K/T extinction was due
to an impact (or two)? Who believes it was volcanism? Something else?
It's not that simple. It depends both upon the distribution of the
total volumes of matter within the two volumes of space, and the fact
that perturbations resulting in elliptical orbits cause matter to
funnel into a smaller volume of space as they approach the sun (and
----- Original Message ----- From: "Dan Chure" <firstname.lastname@example.org>
Cc: <email@example.com>; <firstname.lastname@example.org>
Sent: Saturday, April 19, 2008 6:18 PM
Subject: Re: Source of KT asteroid pdf
If both inner asteroid belt and Kuiper belt collisions produced
impactor candidates, I suppose given the vastly greater distances
and thus volume of space and much smaller target area (Earth) in
that larger volume of space, there is a higher likelihood that an
object from the inner belt would strike our planet.