Bill S; So, you have not satisfactorily answered a single one of my complaints concerning mantle currents (plate tectonics) and you say (on one of the other threads) that you are about to run away from geology. I guess that is an admission of total defeat.
A comment concerning your part 3.
"Recent estimates of the global subduction rate = 3 km^2 pa."
Bill finds it quite acceptable that 65% of the entire surface of the Earth (about 330,000,000 km^2) has fallen down holes and disappeared in the last 200,000,000 years. In fact he is prepared to accept much more.
In any case, Bill clearly finds it quite acceptable that 1,650,000,000 km^2 (3.25 times the surface area of the entire planet) has fallen down holes and disappeared in the last billion years.
Yes, Bill finds it easy to accept that 3.25 times the surface area of the entire planet has fallen down holes and disappeared in the last billion years.
Or, since some believe that plate tectonics began 3 billion years ago, Bill is quite happy to have, 5,000,000,000 km^2, that is, TEN times the surface area of the planet, falling down holes and disappearing, during the "tectonic history" of the Earth.
Bill believes in fairies as well (smile).
