GENERAL GEOLOGY

Detailed explanation-1: -Owing to the minimum slope of land, the river flows at a slow pace, and this causes active deposition and almost no erosion. The sediments carried over the last courses are deposited in this course creating depositional landforms like flood plains, deltas etc.

Detailed explanation-2: -In the Lower Course of a river the most common features are floodplains and levees. Floodplain – A flat area surrounding the river for water to spill on to. The river erodes laterally (sideways) not vertically. The river valley is widened creating a large flat area.

Detailed explanation-3: -The Lower Stage This is the final stage of a river where the valleys are extremely broad and it has generally gentle slope. The valley becomes almost flat which is called a peneplain. Most of the peneplain forms low residual hills with steep slopes which are called as Monadnocks.

Detailed explanation-4: -The three different stages of a river are youthful age, mature age, and old age. In the youthful stage, the river is full of energy and power. In the mature stage of the river, the flow is relatively slower than the youthful stage. In the old age, the river flows very slowly and calmly.

Detailed explanation-5: -Depositional landforms by rivers are Alluvial fans, floodplains, levees, estuary and deltas.