About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 63. Chapters: Adakite, Agpaitic rock, Amygdule, Anatexis, Aphanite, Boninite, Borolanite, Boulder Batholith, Bowen's reaction series, Breccia pipe, Cactolith, Calc-alkaline magma series, Carbonatite, Central Atlantic magmatic province, Chilled margin, Chonolith, Cumulate rock, Dike (geology), Essexite, Extrusive, Felsic, Felsite, Flow banding, Fractional crystallization (geology), Gabbro, Geothermobarometry, Glomeroporphyritic, Granophyre, Hornblendite, Hyalopilitic, Hypersolvus, Igneous differentiation, Igneous rock, Igneous textures, Incompatible element, Intrusion, Kenyte, Komatiite, Lamproite, Lamprophyre, Layered intrusion, Limburgite, Mafic, Magmatic underplating, Magmatic water, Melt inclusions, Micrographic texture, Natrocarbonatite, Nepheline syenite, Nephelinite, Norite, Normative mineralogy, Partial melting, Peralkaline rock, Peraluminous rock, Phacolith, Phonolite, Pluton, QAPF diagram, Quartz monzonite, Ring dike, Sanukitoid, Sheeted dyke complex, Shonkinite, Stoping, Subsolvus, Subvolcanic rock, TAS classification, Tephra, Theralite, Trap rock, Trondhjemite, Ultrapotassic igneous rocks. Excerpt: Igneous rock (derived from the Latin word ignis meaning fire) is one of the three main rock types, the others being sedimentary and metamorphic rock. Igneous rock is formed through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks. This magma can be derived from partial melts of pre-existing rocks in either a planet's mantle or crust. Typically, the melting is caused by one or more of three processes: an increase in temperature, a decrease in pressure, or a change in composition. Over 700 types of igneous rocks have been described, most of them having formed beneath...
