In northern Canada, much of the hard rock found is igneous rock. Igneous rock is rock formed by the hardening and crystallization of molten material that originates deep within the earth. ... Small wonder the magma from which igneous rock is formed can reach temperatures close to 1200 degrees Celsius. read more
Igneous rocks form from magma and lava that cools and solidifies. As this happens, the magma or lava crystallizes, creating igneous rock, of which there are many variations. Igneous rocks come in two types, extrusive and intrusive. Igneous rocks are split into these two categories based upon how they cool. read more
Igneous rocks can be found wherever volcanic activity has brought, or is bringing, magma, ash etc. to the surface where they form basalt, tufa etc. There are also igneous rocks that form underground, and have become exposed by erosion, eg. granites, intrusive dykes. read more