CLASSIFICATION OF ROCKS
The rocks may be classified on the basis of their geological formation, physical characteristics and chemical composition.
1.Geological Formation
- Igneous Rocks
- Sedimentary Rocks
- Metamorphic Rocks
- Stratified
- Unstratified
- Foliated
- Argillaceous
- Silicious
- Calcarious
Igneous Rocks: Rocks which are formed by the cooling of molten lava on or inside the earth's surface during the volcanic eruption are known as Igneous Rocks. Igneous Rocks are generally very hard and durable. Granite, Basalt, Syenite, Diorites and Trap are examples of Igneous rocks.
Sedimentary Rocks: These rocks are formed by the deposition of broken product of rocks and compressed in earth for millions of years. There rocks are strastified and have well defined bedding planes. Sand stones, Lime stones, Doloites
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