https://en.wikipedia.org/wiki/Geothermal_gradient https://en.wikipedia.org/wiki/Geothermal_gradient: “As a general rule, the crust temperature rises with depth

https://en.wikipedia.org/wiki/Geothermal_gradient https://en.wikipedia.org/wiki/Geothermal_gradient: “As a general rule, the crust temperature rises with depth due to the heat flow from the much hotter mantle; away from tectonic plate boundaries, temperature rises in about 25–30 °C/km (72–87 °F/mi) of depth near the surface in most of the world.” ⇒ Even under pressure, I think most water would boil before it could reach the core. Certainly if there’s magma a steam explosion is likely.