[meteorite-list] Crater chains
ted brattstrom
volcanoted at yahoo.com
Sat Jan 19 15:46:58 EST 2008
Aloha -
Just a short note/comment -
The "Crater Chains" seen on the Mercury images, as
well as on Lunar images are secondary craters - caused
by the impact of ejecta from the initial impact. They
head out radially from that initial impact.
Occasionally you can find tertiary craters - from the
impact of ejecta from the secondary impacts :-) :-)
This is not to be confused with the idea of crater
chains from a group of impactors that came from an
initial object that fragmented - (or was impacted) at
some time in orbit. (eg SL9)
I would highly suspect "crater chains" of this nature
would not be in close proximity to each other...
Cheers - ted
--- "E.P. Grondine" <epgrondine at yahoo.com> wrote:
> Hi all -
>
> Unless someone has a disintegration mechanism for
> stoney, stoney iron, and iron impactors before they
> hit -
>
> Then one hypothesis would be that any time you have
> a
> crater chain, it would be from cometary impact.
>
> Are there studies of crater chains on Earth which
> indicate what hit?
>
> E.P. Grondine
> Man and Impact in the Americas
>
>
>
>
>
>
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