I have, yet another, dumb question. Doesn’t this mean there was more water back then?
More ice, less water..................
Not necessarily... Same water... just frozen and piled up in places. The weight of the glaciers actually deformed the crust in some points so much that when the ice melted, the magma pushed the crust back up... This is how some rock at the tops of mountains was once sea bed...
Well, that and crustal boundary layers, obduction and subduction zones, etc...
I’m going to say no. It was just taken out of the loop in the form of ice. Sea levels were far lower at the time.
It’s not dumb... The amount or water was the same, but none was in the atmosphere. It was all on the ground. That is what blew me away when I first found out that the driest desert on the planet is Antarctica with almost zero atmospheric precipitation.
I have a friend who lives in Alaska. He says that while it is cold in the winter it is not as bad as some think because it is a dry cold. All the water is frozen and laying on the ground. :)
https://en.wikipedia.org/wiki/Antarctica