It's probably a good thing that you don't have a volcano of your own to erupt at will, as much as you may think you could totally practice self control. Stick to the mini baking soda version.
Fortunately, there are scientists who can play with lava on our behalf and figure out what happens when you pour it over ice. Will it explode? Will it annihilate the ice?
Turns out, it's like a bubble bath that will give you third degree burns.