This depends on the nature of the plates involved. In a subduction zone, the subducting plate, which is normally a plate with oceanic crust, moves beneath the other plate, which can be made of either oceanic or continental crust. During collisions between two continental plates, large mountain ranges, such as the Himalayas are formed.
Any impurities are left behind in the pot where the water was boiled. On the other hand, if you're just interested in making water safe for drinking, you can do this by boiling the water for about 15 minutes. This is enough to kill most of the microbes in the water.pdate: I have vary hard water at my house and and would like to make it a bit softer for my aquarium instead of having to carry bottled water home from the store. How long do I have to boil hard water to distille it or remove some of the hardness. Tap water is @ 22dh.
The water will quickly heat up as the hot rock transfers its heat to the water. You will need enough rocks in the fire to keep adding them to the container of water often enough that the water comes to a boil and stays boiling for the required time (5-20 minutes). Filtering. Commercially available water filters: