volcanic basalt

Volcanic basalt is a dark-colored, dense igneous rock formed from rapidly cooled lava during volcanic eruptions. Rich in minerals like magnesium and iron, it is common in volcanic regions and makes up large parts of oceanic crust. Basalt solidifies from molten rock that erupts onto Earth's surface, resulting in fine-grained textures because it cools quickly. Its durability and strength make it useful for construction and decorative purposes. Overall, basalt is a fundamental component of Earth's crust, formed through volcanic activity, known for its stability and distinctive dark appearance.