I am wondering how accurate such an approximation would be. I wish to take a current height map of the earth (including the ocean floor) and approximate the form of ancient landmasses by changing the sea level height.
I suppose this question could be answered by how much the ocean floor changes over time.
Timescales: Preferably over the last 200 000 - 300 000 years, but depending on the error of such an approximation, I am willing to settle for the last 10 000 - 15 000 years.