Types of Rocks in India

Some important types of rocks in India include:

1. Rocks of the Archaean system- They are formed from hot molten earth and are the oldest as well are primary rocks an example is Gnesis.
2. Rocks of the Dharwar system- They are formed due to erosion and sedimentation of the archaean system and are also the oldest sedimentary rocks.
3. Rocks of the Cuddapah system- They are formed due to erosion and sedimentation of the Dharwar system and include limestone, sandstone, etc.
4. Rocks of the Vindhyan system- They are formed from the silt of river valleys and shallow oceans. An example is red sandstone.
5. Rocks of Gondwana system-  These types of rocks are formed due to depression in basins. Coal is an example.
6. Rocks of Deccan trap-These are formed due to the eruptions of volcanoes and examples include dolerite and basalt.
7. Rocks of Tertiary system- They are found mostly in Himalayan ranges.
8. Rocks of the Quaternary system- They are found in the plains of the Indus and Ganga rivers.

Related Links

1. Metamorphic rocks
2. Classification of Minerals
3. How are minerals formed in Sedimentary Rocks?

Most of you see rock lying on ground almost every day, but how many did people wonder about it’s origin? With the help of this article we have tried to answer this question. We have discussed about rocks, three type of rocks and their examples.

Rocks is a very basic concept taught in primary school, but most people forget about it. You can loose potential marks in competitive exams if you ignore this topic as some questions are asked about rocks.

Hope it will help you in your coming exams!

Also read:

• Rocks and Minerals
• Rock Cycle
• Difference Between Rocks and Stones

Based on the origin of rocks, they are classified into three types – Igneous rocks, Sedimentary rocks, and Metamorphic rocks. There are also a few rock substances of organic origin which sometimes contain fossils, for example, coal, peat, etc.

Rock Formation takes place by naturally occurring accumulation of mineral particles. The solid part of Earth is made up of various types of rocks differing from one another in texture, structure, permeability, mode of occurrence, and degree of resistance to denudation.