[MacrohardDoors]

I think much of the sea is there because of massive nuclear war millions of years ago which created enormous craters that the water just seeped into and filled up.

I mean, I never thought of it prior to today. But why not.

[medstrom]

Joke? Or where'd the water have come from?

[MacrohardDoors]

Vast lakes, smaller rivers, puddles, you know?

[JumpCrisscross]

> Vast lakes, smaller rivers, puddles, you know?

The same volume of water was just…higher?

[lazide]

Notably, that is how melting glaciers raise sea levels.

[medstrom]

So where'd the original glacier ice come from? :-) Earth has 1.386 billion cubic km (333 million cubic miles) of water. Lot of glaciers, that.

[lazide]

Not proposing it ever actually happened, but one hypothesis [https://en.m.wikipedia.org/wiki/Snowball_Earth].

Personally, I’m of the ‘shits whack yo’ school of geohistorical projections. So got me. I’m still pondering what weird confluence of events could cause Salt Domes combined with massive oil and natural gas deposits like in the Gulf of Mexico.

Chicxulub?

Something else?

One thing is for sure, the more you understand and analyze the geological record, the more the doomsday preppers seem like insane optimists!

[eru]

If earth were a smooth sphere, the water would be about 2500m deep.

You can't get that amount of water from lakes, rivers and puddles.

If you want to less of earth by water (than the oceans cover today), you need those parts to be covered in deeper water (on average) than the oceans are today.