Don't the continents follow the plates?<quoted text>
As Continental crust is lighter than Oceanic crust it's the Oceanic crust that mainly gets subducted.
Marine fossils are found on even the oldest mountains. Evidently they were dunked at one time.
There is not one subduction occurring, but a few. You saw the numbers. Why are we finding old fossils? And can you say there were no more before them?
And again, what was on top got chemically and radiologically changed when it went under and came back up again. How can you be sure of the accuracy of modern methods of dating?
The crust of the earth is a cooling of what was below and cosmic dust added which all gets recycled in time.