Releasing that "water" (see below), dropping the pressure from thousands of psi miles below the surface to atmospheric pressure, would immediately flash it to super-superheated steam.
You missed the second site; the second arctic ocean. The arctic ocean, as everyone should know by now is cold, cold, cold. That would have taken care of the steam problem from down there before the water even reached the surface and reverted, instentanously, to normal atmosphereic pressures and about the tempertur of a nice worm tropicle inlet.
I know this was more than 4000 years ago but I sure hope that second arctic ocean has gotten all its cold back by now. At the rate we're melting the first one it won't be to long now before we will have to go get the second and put it into place. I'm hoping it will be frozed over like the first one used to.
And that sismolegist fella, I'm hoping he's looking for another antartica because we're going to need a new one of them soon 2.
Edited by AZPaul3, : I'm not sure.