posted on Aug, 29 2012 @ 07:28 PM
reply to post by punkinworks10
Thanks for linking that abstract, and it is definitely food for thought. I see a couple of problems with it though:
1) The angle of incidence of the asteroid impact, relative to the dispersion of seismic waves from the event. Most of them seem to come in at an
angle, and do not hit at a 90 degree perpendicular to the earth. I think this could have a drastic effect on the dispersion characteristics of the
seismic portion of the impact, which leads me to:
2) Considering what is proposed in your linked abstract, I'd like to know how they would account for a focusing of this seismic energy to the degree
that it would cause flood basalt volcanism at the antipode- when a) the earth is not exactly round, and thus automatically defocuses this energy; b)
the varying layers of all different kinds of rock would contribute to this defocusing, especially at those distances, due to the refraction
characteristics of seismic energy in varying densities of rock; and c) the necessary magma type (basalt) would have to be present in each of those
cases to form the CFB in the first place.
What I am saying is that I find it hard to digest that all of those conditions could be met, considering what I just said.
edit on Wed Aug 29th
2012 by TrueAmerican because: (no reason given)