To clarify, it's not that a particular point of coastal land moved 800 ft away from where it had been previously. It's that some of the land was uplifted past s

To clarify, it's not that a particular point of coastal land moved 800 ft away from where it had been previously. It's that some of the land was uplifted past sea level--essentially it "rose up out of the water"--effectively moving the location of the coastline.