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Re: the deccan antipode
A couple of years ago, I posted a similar hypothesis (on a BBS) that an
impact of Chicxulub size might have resulted in effects on the antipode side
of the planet. A geophysicist quite convincingly showed me that it would be
impossible because the seismic waves generated _cannot_ pass directly through
the core of the earth! They are deflected at (I believe) 120 degree angles.
Even if the Deccan plateau were antipode to the impact this is shear
coincidence. BTW the Deccan floods began BEFORE the impact and it is now
believed that they are associated with a hotspot in the Indian Ocean.
Thomas R. Lipka