Transient Mantle Plumes my friend, transient.
That would explain much of those two pdf’s uncoverings as for the geological make-up.
this would suggest that perhaps we are seeing something that has not been seen in milleniums.
http://www.johnrudge.com/transientfinal.pdf
I agree with you there. Maybe not in the last 100K years on this magnitude.
Thanks for the link. That’s a keeper!