3 ms·
It's just the weight of literally everything on the planet pushing down, as well as miles of rock :)
by asdfman123 11mo ago
It's just the weight of literally everything on the planet pushing down, as well as miles of rock :)
- louthy 11mo ago“just” is doing a lot of heavy lifting there ;)
- lisper 11mo agoLiterally! :-)
- praptak 11mo agoIndirectly. The actual spike of pressure that ejects the magma comes from the gasses dissolved therein. When the magma moves up, the pressure drops and the gasses become oversaturated and thus prone to violent release.
- asdfman123 11mo agoThe gas bubbles result form when pressure is reduced, like you mention. So there's actually less pressure near the surface, it's just more erratically applied. The pressure of the earth's subsurface is proving the animating force.