Stratified (Sedimentary) Rocks:
- After disintegration, sand, mud and pebbles get laid down in layers. Over time, these layers are squashed under more and more layers.
- Over a period of time igneous rocks get disintegrated due to the collective effect of water and other forces. These rocks get laid as layers.
- Over time, these layers are squashed under more and more layers and water.
- The upper layered rocks exert pressure on the layers of old layers of rocks below them. Eventually, rocks are formed with different layers.
- These rocks are called ‘Sedimentary Rocks’ or ‘Stratified Rocks’.
- Examples of stratified rocks are gypsum, limestone and coal.
- Coal and gypsum are obtained from Bihar and Jharkhand.
Types of stratified rocks:
