Explain the formation of sedimentary rocks on the basis of agents of formation.

There are five main types of sedimentary rocks on the basis of agents of formation:

1. Riverine Rocks — These are formed by the sediments deposited by running water or river.
2. Lacustrine Rocks — These are formed by the deposition of silt etc on the bed of lakes.
3. Glacial Rocks — These are formed by the debris carried on and deposited by glaciers.
4. Aeolean Rocks — These are formed by the deposition of sand particles accumulated by wind.
5. Marine Rocks — These are formed by the deposition of sediments at the ocean floor. These are of two types — Calcarious sedimentary rocks and Carbonaceous sedimentary rocks.