* Formation: Intrusive igneous rocks form when magma (molten rock) cools and solidifies beneath the Earth's surface. The slow cooling process allows large crystals to form.
* Examples:
* Granite: A light-colored, coarse-grained rock commonly found in mountains.
* Gabbro: A dark-colored, coarse-grained rock often found in oceanic crust.
* Diorite: A medium-colored, coarse-grained rock that can be found in both continental and oceanic settings.
* Peridotite: A dark-colored, coarse-grained rock rich in olivine, found deep within the Earth's mantle.
Key Characteristics of Intrusive Igneous Rocks:
* Large Crystals: The slow cooling allows crystals to grow larger.
* Crystalline Texture: The rock is entirely made up of interlocking crystals.
* Plutonic Rocks: This term specifically refers to intrusive igneous rocks that cool and solidify deep within the Earth.
Let me know if you'd like to know more about specific intrusive igneous rocks!
