English: The cycle of rocks as it was presented by James Hutton already 200 years ago. Rocks that are exposed to weathering and erosion, deposit as sediments, which are then covered by more sediments. This process leads to compaction and cementation, which forms sedimentary rocks. After being buried deeply, rock undergo metamorphosis or melting, or both. Later, rocks are uplifted to the surface, while being deformed or crystallised. After they become exposed to weathering, the rock cycle starts all over.