What are igneous rocks? Volcanic stone

By |2019-09-10T05:42:47-07:00June 26th, 2017|Geology|Comments Off on What are igneous rocks? Volcanic stone

Igneous rocks: Obsidian tools What does "igneous" mean? Igneous means "fiery", and igneous rocks are rocks that were made by heating them up in a fire. Usually that fire is [...]