Theory 80/Planetary/Continental freeboard
Freeboard Is Crust Against Water
The claim
Continental freeboard is set by the ratio of crustal thickness to ocean volume, so a planet with more water drowns its continents.
01Mechanism
Elevation depends on isostatic balance; adding water raises sea level faster than it raises continents.
02Prediction
Freeboard should track the ratio.
03Refutation
Freeboard tracking crustal thickness alone would remove water.