* Granite: A light-colored, coarse-grained rock that is often found in mountain ranges.
* Diorite: A medium-grained, dark-colored rock that is often found in volcanic arcs.
* Gabbro: A dark-colored, coarse-grained rock that is often found in oceanic crust.
* Peridotite: A dark-colored, coarse-grained rock that is often found in the Earth's mantle.
* Syenite: A light-colored, medium-grained rock similar to granite but with less quartz.
These rocks form when magma, molten rock found beneath the Earth's surface, cools and crystallizes slowly over time. The slow cooling allows the mineral crystals to grow large, giving these rocks their coarse-grained texture.
Here are some key characteristics of intrusive igneous rocks:
* Slow cooling: This leads to the formation of larger crystals.
* Coarse-grained texture: The large crystals are easily visible to the naked eye.
* Often found in batholiths, stocks, and dikes: These are large underground masses of igneous rock.
Let me know if you'd like more information about a specific intrusive igneous rock!
