Igneous Rocks
* Intrusive:
* Granite: Forms when magma cools and crystallizes slowly beneath the Earth's surface.
* Gabbro: Similar to granite, but with a darker color due to different mineral composition.
* Diorite: A medium-colored intrusive igneous rock.
* Extrusive:
* Rhyolite: Forms from rapidly cooling lava on the Earth's surface, resulting in a fine-grained texture.
* Basalt: A dark-colored, fine-grained extrusive rock common in volcanic flows.
* Andesite: A medium-colored extrusive igneous rock.
Important Note:
* Intrusive igneous rocks cool slowly underground, leading to large crystals.
* Extrusive igneous rocks cool quickly on the surface, leading to smaller crystals or even a glassy texture.
The other major rock types are not directly classified as intrusive or extrusive:
* Sedimentary Rocks: Formed by the accumulation and cementation of sediments.
* Metamorphic Rocks: Formed when existing rocks are transformed by heat, pressure, or chemical reactions.
Let me know if you'd like to explore any of these rock types in more detail!
