1. UNIT 8 Surface process Biology and Geology 3. Secondary Education SEDIMENTARY BASINS

2. UNIT 3 Biology and Geology 3. Secondary Education UNIT 8 Sedimentary basins A sedimentary basin is an area of the earth’s crust that has been subjected to progressive sinking, and where sediments from the erosion of the rocks around it accumulate. Erosion Basin Accumulated layers of sediment on the bottom of the basin Erosion Sinking

3. UNIT 3 Biology and Geology 3. Secondary Education UNIT 8 Sedimentary basins Sedimentary basins can be found in different parts of the earth’s crust. For example: In the interior of continental areas. They occupy low areas where river courses generally flow, or where there are lakes and lagoons. The streams flowing down the slopes also deposit sediment in them.

4. UNIT 3 Biology and Geology 3. Secondary Education UNIT 8 Sedimentary basins Sedimentary basins can be found in different parts of the earth’s crust. For example: In coastal areas. They occupy the areas where major rivers flow into the sea. When these basins are filled in, they usually form swamps or deltas.