[Origin]

Bits of the oceans are "boiling" hot- over 100 C* heated by geothermal energy which isn't going to run out quickly.

OK.  The oceans will freeze except for little pockets of water near thermal vents.

[Bored chemist]

Bits of the oceans are "boiling" hot- over 100 C* heated by geothermal energy which isn't going to run out quickly.

OK.  The oceans will freeze except for little pockets of water near thermal vents.

If you get bored, you can calculate how "little" they are.