There had to be some sea level fluctuation during and after the ice age. Water is a zero sum game. If it’s covering land masses hundreds of feet thick over hundreds or thousands of miles, the sea levels must be lower while that’s going on. After those ice sheets melt, sea levels must rise. Unless I’m missing something.
Don’t confuse ice sheets covering land mass with ice “shelves” covering ocean. The latter melting do not change sea levels, as they’re already floating in water.
> Water is a zero sum game. If it’s covering land masses hundreds of feet thick over hundreds or thousands of miles, the sea levels must be lower while that’s going on. After those ice sheets melt, sea levels must rise.
And the Earth isn’t a balloon, so if part of the surface used to be lower, other parts had to be higher.
These civilizations built on this side of your beloved ice age.
Depends on if the ice masses are above land or sea as the sea level will actually lower if the ice that melts is only in the ocean. Also, some of the water mass is taken up by plants and new forestation as the temperature increases above 0 degrees.