Rocks

Major Types of Rocks

Igneous Rocks

  • As igneous rocks form out of magma and lava from the interior of the earth, they are known as primary rocks. The igneous rocks (Ignis – in Latin means ‘Fire’) are formed when magma cools and solidifies.
  • When magma in its upward movement cools and turns into solid form it is called igneous rock. The process of cooling and solidification can happen in the earth’s crust or on the surface of the earth.
  • Examples: Granite, gabbro, pegmatite, basalt, volcanic breccia and tuff.

Sedimentary Rocks

  • The word ‘sedimentary’ is derived from the Latin word sedimentum, ....
Do You Want to Read More?
Subscribe Now
To get access to detailed content
Buy April 2023 Issue

Already a Member? Login here

Take Annual Subscription and get the following Advantage
The annual members of the Civil Services Chronicle can read the monthly content of the magazine as well as the Chronicle magazine archives.
Readers can study all the material before the last six months of the Civil Services Chronicle monthly issue in the form of Chronicle magazine archives.
Be an Annual Subscriber

Related Content

Geography Of India