The Rock Cycle
![The Rock Cycle](/sites/default/files/media/images/rock_cycle_sm.jpg)
NESTA
- Sedimentary rocks are formed via weathering and transport of existing rocks, and then deposition, cementation, and compaction into a sedimentary rock.
- Igneous rocks are formed by cooling and crystallization of molten rock.
- Metamorphic rocks are formed when heat or pressure are applied to other rocks.