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- This is how our rock's story begins. It's formed by magma, and since it's still inside of the magma chamber, it will cool very slowly and become an intrusive igneous rock. Right now, the heat of it's environment is very hot so the cooling process takes a long time. This leads to large crystal formations and a grainy texture. Eventually, the newly formed rock will be expelled from the chamber and join the rock cycle.
- Now, after decades and centuries of being an igneous rock, stuck in a magma chamber, our rock has been uplifted from the cavern into the world above. The rock sits at the base of a cliff. Over years and years, gravity and wind and rain weather the cliff above the rock and sediments fall on top of the rock, breaking it down into small pieces as well. This erosion is what begins to change the rock. Eventually all these small pieces will cement together to become a sedimentary rock.
- Now it's been another few centuries. The rock has been weathered and eroded and has become cemented together with many other rocks, forming a sedimentary rock.
- The Rock Cycle Igneous rock gets eroded, compacted and cemented together and becomes sedimentary rock Sedimentary rock undergoes heat and pressure, becoming metamorphic rock Magma becomes igneous rock deep below earth's surface
- The sedimentary rock eventually gets weathered into small pieces and collects by a beach near a volcano. Over time, the rocks will tumble into the water. The tides will take them underwater to the cavern below the volcano. The extreme heat and pressure there will turn the sedimentary rocks into metamorphic rock.
- The newly formed metamorphic rocks melt back down into magma, ready to be reformed into igneous rock and to go through endless changes through the rock cycle.
- This is the basic outline of the rock cycle. There are other ways that rocks can change from one type to another, of course, but this is the basic way.
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