The diagram illustrates the formation of sedimentary rocks in a coastal area.
The first two diagrams demonstrate the process of mountain cracking. The process takes place when rainwater hits the mountains and saturates the soil This causes the rocks to crack and fall. Therefore showing how boulders are formed, and how those then move downstream towards the lowest water level.
The next two diagrams show how sedimentary rocks are created. The large stones sitting at the bottom of the water undergoes erosion, which causes it to turn into small pebbles. These small rocks get mixed with other material underwater like sand and cement. As tides changes, the pebbles get moved around until it settles close to the mountain. As a result, a coast is formed.
In conclusion, the system in forming sedimentary can be categorised into two parts. First is the construction of pebbles. Second is how those get mixed with other materials and gets washed against seashore to create coasts.
