Re: More Than Meteor Killed the Dinos

[Tommy Tyrberg <tommy.tyrberg@norrkoping.mail.telia.com>]

Not really, because the maria filled up with basalt long after the impacts 
that created them. This is known from direct dating but is also clear from 
the stratigraphy. In many cases it is possible to see craters that are 
clearly younger than the maria but are filled by the same basalt fill as 
the main mare. Sinus Roris and Stadius are classic cases. Also not all 
mares are filled with basalt, the South Pole-Aitken basin (the largest of 
them all) isn't and Mare Orientale only to very limited extent.

Tommy Tyrberg


At 13:08 2006-10-31, Deinonychus47@aol.com wrote:
> <It is indeed possible that *very* large impacts might generate lava on a
> large scale. There is no definite proof that this has happened on Earth
> (except on a small scale at Sudbury), but there is one clear case on Venus,
> so it can happen.
>
> Tommy Tyrberg>
>
> ----------------------------------------------------------------------------------------------------------
>
> There are also the various Mare on the moon.
>
>
> Lawrence S. Kashdan