Igneous Rock

Igneous Rock / noun :

First Page Mentioned : Not directly mentioned within the narrative

Coming from the Latin word for 'fire': ' ignis, igneous rock is one of the three main rock types found on Earth (a type which includes, but is not limited to, pumice, scoria and basalt'). It's formed when magma/lava cools and solidifies from its molten state, and believed to be 15% of the current land surface, although it's more common in some areas than others (such as around volcanoes).

Related Entries: Basalt; Earth; Magma; Pumice; Scoria

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