Pumice is an example of extrusive igneous rock. The word extrusive means that the magma was forced onto the earth's surface and cooled in a matter of hours. Granite is an example of intrusive ...

Find out how magma has created igneous rock features with this BBC Bitesize Scotland article for P5, P6, P7 - Second Level CfE ...

Igneous rocks are the "new kids" in the rock cycle. They're the new rock on the block, ready to start fresh. Basalt lava flow in Hawaii, a perfect example of an extrusive igneous rock.

Intrusive rocks cooled slower, allowing the minerals to form crystals that can be detected by the eye. The most common intrusive igneous rock in the area is known as diabase.

In Yellowstone, the Hellroaring and Crevice plutons — large coherent bodies of intrusive rock — are Archean in age and located between Gardiner and Cooke City along the northern boundary of ...

Rock Types: Igneous, Sedimentary, and Metamorphic Rocks Explained. Posted: March 12, 2025 | Last updated: March 12, 2025. This 1930s educational film explores the natural landscapes, geological ...