- Igneous rocks are formed by the solidification of the molten magma, e.g., Mica, Granite etc.
- Sedimentary rocks are formed due to accumulation of rock particles and organic matter in layers, under tremendous pressure, e.g., Gravel, Peat, Gypsum etc.
- Metamorphic rocks were originally igneous or sedimentary but late changed due to pressure, heat or action of water, e.g., Gneiss, Marble, Quartzite etc.
|S. No||Types of Rocks||Original Rock||Metamorphic|
|6.||Sedimentary||Shale/Clay||Slate, Mica, Schist|