Here's how it works:
1. Erosion: Weathering and other natural forces break down existing rocks into smaller pieces (sediments).
2. Transportation: These sediments are carried away by wind, water, or ice.
3. Deposition: When the transporting force loses energy, the sediments settle and accumulate in layers.
4. Compaction and Cementation: Over time, the weight of overlying sediments compacts the layers, and dissolved minerals in groundwater act as a cement, binding the particles together.
This process creates sedimentary rocks, which can be classified into different types based on the size and origin of the sediments:
* Clastic sedimentary rocks: Formed from fragments of other rocks (e.g., sandstone, shale, conglomerate).
* Chemical sedimentary rocks: Formed from dissolved minerals that precipitate out of solution (e.g., limestone, rock salt).
* Organic sedimentary rocks: Formed from the accumulation of organic matter (e.g., coal, oil shale).
