Helium.com | Geology & Geophysics | How rocks are formed http://www.helium.com/knowledge/271086-how-rocks-are-formed.xml Helium.com > Geology & Geophysics > How rocks are formed en-us Copyright Helium.com Mon, 31 Aug 2009 20:20:12 GMT Mon, 31 Aug 2009 20:20:12 GMT Magma contains all of the chemicals and minerals of the Earth in hot and liquid form. When magma escapes from the heat and engages in cooling, rock... http://www.helium.com/items/1656595-how-rocks-are-formed Thu, 19 Nov 2009 22:37:22