Bill S. has not satisfactorily answered a single one of the complaints concerning mantle currents (plate tectonics) mentioned above. And, after all, this was his stated reason for starting this thread.

Not a single one. Not even close.

I guess that is an admission of total ignorance on the subject.

Don't you folk have any friends who can help you out.

Don't any of you know a friendly academic, or two, who might like to defend plate-tectonics.

How is it you have no friends in the academic world?

Earth formed from a collision
www.preearth.net

Plate-tectonics is wrong
www.preearth.net/plate.html