Differentiate between extrusive igneous and intusive …
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Yogita Ingle 6 years, 1 month ago
Intrusive Igneous Rocks
Extrusive Igneous Rocks
Intrusive igneous rocks are formed when the magma cools and solidify below the surface of the Earth.
Extrusive igneous rocks are formed by cooling the molten magma on the surface of the Earth. The molten magma comes on to the Earth’s surface through cracks, fissures and volcanic eruption
Since these rocks cools down slowly, they have coarse texture with large crystals
Since these rocks solidify at a faster pace, they are smooth, crystalline and fine grained.
Example: Dolomite
Example: Basalt
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