-----Original Message-----
Ilja
Nieuland wrote:
I am certainly no expert at this, but doesn't
all this rather beg the question how much impact the earth can bear before
its structural integrity is compromised?
Brings me to another thought that keeps
occurring (...more wild speculation!???..8^). Perhaps some hardcore
geologists out there can set me straight. Could some of the larger meteor
strikes that have occurred in the past be a significant cause of magma
currents that power plate tectonics? I know that internal release of
radioactivity is supposed to be the cause, but couldn`t a large (fast
moving) meteor strike penetrate into the deep mantle and cause long-term
displacement of matter that would result in long term reestablishment of
equilibrium (as far as material density...similar to the rise of ancient
mountain roots). Could this be what powers plate
tectonics?