* Weathering and Erosion: Existing rocks (igneous, metamorphic, or even other sedimentary rocks) are broken down by wind, water, ice, and chemical reactions. This process is called weathering. The broken-down pieces are then transported by wind, water, or ice, a process called erosion.
* Deposition: The transported rock fragments (sediments) eventually settle in a new location, often in layers. This is called deposition.
* Compaction and Cementation: Over time, the weight of overlying sediments compresses the lower layers, squeezing out water and air. This process is called compaction. Minerals dissolved in the water then precipitate between the sediment grains, acting as a glue to bind them together. This is called cementation.
So, the process of creating sedimentary rocks involves the breakdown, transport, and re-assembly of other rocks!
