Igneous rocks (Topical Term)

Work cat: Carmichael, I.S.E. Igneous petrology, 1974.

Academic Press dictionary of science and technology, 1992 (igneous petrology -- the study of the origin, composition, and occurrence of igneous rock)

McGraw-Hill dictionary of scientific and technical terms, 2003 (igneous petrology -- The study of igneous rocks, their occurrence, composition, and origin)

Geological Association of Canada, Volcanology and Igneous Petrology Division WWW home page, Nov. 14, 2011: about us (Igneous petrology is the study of all rocks that have crystallized from molten magma, both volcanic rocks that form at the Earth's surface and plutonic rocks (e.g., granite) that have formed at depth within the Earth)