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- Fractional_crystallization_(geology) abstract "Fractional crystallization is one of the most important geochemical and physical processes operating within the Earth's crust and mantle. Fractional crystallization is the removal and segregation from a melt of mineral precipitates; except in special cases, removal of the crystals changes the composition of the magma. Fractional crystallization in silicate melts (magmas) is complex compared to crystallization in chemical systems at constant pressure and composition, because changes in pressure and composition can have dramatic effects on magma evolution. Addition and loss of water, carbon dioxide, hydrogen, and oxygen are among the compositional changes that must be considered. For example, the partial pressure (fugacity) of water in silicate melts can be of prime importance, as in near-solidus crystallization of magmas of granite composition. The crystallization sequence of oxide minerals such as magnetite and ulvospinel is sensitive to the oxygen fugacity of melts, and separation of the oxide phases can be an important control of silica concentration in the evolving magma, and may be important in andesite genesis.Experiments have provided many examples of the complexities that control which mineral is crystallized first as the melt cools down past the liquidus. One example concerns crystallization of melts that form mafic and ultramafic rocks. MgO and SiO2 concentrations in melts are among the variables that determine whether forsterite olivine or enstatite pyroxene is precipitated, but the water content and pressure are also important. In some compositions, at high pressures without water crystallization of enstatite is favored, but in the presence of water at high pressures, olivine is favored.Granitic magmas provide additional examples of how melts of generally similar composition and temperature, but at different pressure, may crystallize different minerals. Pressure determines the maximum water content of a magma of granite composition. High-temperature fractional crystallization of relatively water-poor granite magmas may produce single-alkali-feldspar granite, and lower-temperature crystallization of relatively water-rich magma may produce two-feldspar granite.During the process of fractional crystallization, melts become enriched in incompatible elements. Hence, knowledge of the crystallization sequence is critical in understanding how melt compositions evolve. Textures of rocks provide insights, as documented in the early 1900s by Bowen's reaction series. Experimentally-determined phase diagrams for simple mixtures provide insights into general principles. Numerical calculations with special software have become increasingly able to simulate natural processes accurately. Main article: Igneous differentiation↑".
- Fractional_crystallization_(geology) thumbnail Fractional_crystallization.svg?width=300.
- Fractional_crystallization_(geology) wikiPageID "5782810".
- Fractional_crystallization_(geology) wikiPageLength "4237".
- Fractional_crystallization_(geology) wikiPageOutDegree "34".
- Fractional_crystallization_(geology) wikiPageRevisionID "636383846".
- Fractional_crystallization_(geology) wikiPageWikiLink Andesite.
- Fractional_crystallization_(geology) wikiPageWikiLink Bowens_reaction_series.
- Fractional_crystallization_(geology) wikiPageWikiLink Category:Igneous_petrology.
- Fractional_crystallization_(geology) wikiPageWikiLink Category:Igneous_rocks.
- Fractional_crystallization_(geology) wikiPageWikiLink Crust_(geology).
- Fractional_crystallization_(geology) wikiPageWikiLink Cumulate_rock.
- Fractional_crystallization_(geology) wikiPageWikiLink Earths_mantle.
- Fractional_crystallization_(geology) wikiPageWikiLink Enstatite.
- Fractional_crystallization_(geology) wikiPageWikiLink Feldspar.
- Fractional_crystallization_(geology) wikiPageWikiLink Flow_banding.
- Fractional_crystallization_(geology) wikiPageWikiLink Forsterite.
- Fractional_crystallization_(geology) wikiPageWikiLink Fractional_crystallization_(chemistry).
- Fractional_crystallization_(geology) wikiPageWikiLink Fugacity.
- Fractional_crystallization_(geology) wikiPageWikiLink Granite.
- Fractional_crystallization_(geology) wikiPageWikiLink Igneous_differentiation.
- Fractional_crystallization_(geology) wikiPageWikiLink Incompatible_element.
- Fractional_crystallization_(geology) wikiPageWikiLink Layered_intrusion.
- Fractional_crystallization_(geology) wikiPageWikiLink Liquidus.
- Fractional_crystallization_(geology) wikiPageWikiLink Mafic.
- Fractional_crystallization_(geology) wikiPageWikiLink Magma.
- Fractional_crystallization_(geology) wikiPageWikiLink Magnetite.
- Fractional_crystallization_(geology) wikiPageWikiLink Mantle_(geology).
- Fractional_crystallization_(geology) wikiPageWikiLink Mineral.
- Fractional_crystallization_(geology) wikiPageWikiLink Mineral_redox_buffer.
- Fractional_crystallization_(geology) wikiPageWikiLink Olivine.
- Fractional_crystallization_(geology) wikiPageWikiLink Oxide.
- Fractional_crystallization_(geology) wikiPageWikiLink Partial_pressure.
- Fractional_crystallization_(geology) wikiPageWikiLink Phase_diagram.
- Fractional_crystallization_(geology) wikiPageWikiLink Pyroxene.
- Fractional_crystallization_(geology) wikiPageWikiLink Silica.
- Fractional_crystallization_(geology) wikiPageWikiLink Silicon_dioxide.
- Fractional_crystallization_(geology) wikiPageWikiLink Solidus_(chemistry).
- Fractional_crystallization_(geology) wikiPageWikiLink Ultramafic.
- Fractional_crystallization_(geology) wikiPageWikiLink Ultramafic_rock.
- Fractional_crystallization_(geology) wikiPageWikiLink Ulvospinel.
- Fractional_crystallization_(geology) wikiPageWikiLink Ulvöspinel.
- Fractional_crystallization_(geology) wikiPageWikiLink File:Fractional_crystallization.svg.
- Fractional_crystallization_(geology) wikiPageWikiLinkText "Fractional crystallisation".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "Fractional crystallization (geology)".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "Fractional crystallization".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "crystal fractionation".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "crystal settling".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "crystallization".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "crystallize".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "crystallized".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "fractional crystallisation".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "fractional crystallization".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "fractionally crystallizes".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "fractionate".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "fractionated".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "fractionates".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "fractionating".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "fractionation".
- Fractional_crystallization_(geology) wikiPageWikiLinkText "magma crystallization".
- Fractional_crystallization_(geology) hasPhotoCollection Fractional_crystallization_(geology).
- Fractional_crystallization_(geology) wikiPageUsesTemplate Template:Crystallization.
- Fractional_crystallization_(geology) wikiPageUsesTemplate Template:Refimprove.
- Fractional_crystallization_(geology) wikiPageUsesTemplate Template:Reflist.
- Fractional_crystallization_(geology) subject Category:Igneous_petrology.
- Fractional_crystallization_(geology) subject Category:Igneous_rocks.
- Fractional_crystallization_(geology) comment "Fractional crystallization is one of the most important geochemical and physical processes operating within the Earth's crust and mantle. Fractional crystallization is the removal and segregation from a melt of mineral precipitates; except in special cases, removal of the crystals changes the composition of the magma.".
- Fractional_crystallization_(geology) label "Fractional crystallization (geology)".
- Fractional_crystallization_(geology) sameAs تبلور_تجزيئي.
- Fractional_crystallization_(geology) sameAs Fraktionierte_Kristallisation_(Petrologie).
- Fractional_crystallization_(geology) sameAs Cristalización_fraccionada_(geología).
- Fractional_crystallization_(geology) sameAs Fraktsioneeruv_kristalliseerumine.
- Fractional_crystallization_(geology) sameAs Fraktioiva_kiteytyminen.
- Fractional_crystallization_(geology) sameAs Cristallisation_fractionnée_(géologie).
- Fractional_crystallization_(geology) sameAs Kristalfractionatie.
- Fractional_crystallization_(geology) sameAs Cristalização_fracionada.
- Fractional_crystallization_(geology) sameAs m.0f49b2.
- Fractional_crystallization_(geology) sameAs Frakcionirana_kristalizacija_(geologija).
- Fractional_crystallization_(geology) sameAs Фракциона_кристализација.
- Fractional_crystallization_(geology) sameAs Fraktionerad_kristallisation.
- Fractional_crystallization_(geology) sameAs Kết_tinh_phân_đoạn_(địa_chất).
- Fractional_crystallization_(geology) sameAs Q577904.
- Fractional_crystallization_(geology) sameAs Q577904.
- Fractional_crystallization_(geology) wasDerivedFrom Fractional_crystallization_(geology)?oldid=636383846.
- Fractional_crystallization_(geology) depiction Fractional_crystallization.svg.
- Fractional_crystallization_(geology) isPrimaryTopicOf Fractional_crystallization_(geology).