After weathering processes have had their actions on the earth materials making up the surface of the earth, the geomorphic agents like running water, groundwater, wind, glaciers, waves perform erosion. Several related landforms together make up landscapes, (large tracts of earth's surface). Landforms once formed may change in their shape, size and nature slowly or fast due to continued action [...]
Rivers deposit sediments in different parts of their courses and thus form three major types of landforms which are called constructional landforms such as alluvial fans cones, natural levees and deltas. Depositional Landform # 1. Alluvial Fans and Cones: Alluvial fans (fig. 18.14) and cones (fig. 18.15) due to accumulation of materials are always formed at the base of foothills [...]
The significant landforms resulting from fluvial erosion by streams include river valleys, waterfalls, pot holes, structural benches, river terraces, river meanders, ox-bow lakes and peneplians etc. Erosional Landform # 1. River Valleys: The valleys carved out by the rivers are significant erosional landforms. The shape and dimension of fluvially originated valleys change with the advancement of the stages of fluvial [...]