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- Rain-out_model abstract "The rain-out model is a model of planetary science which describes the first stage of planetary differentiation and core formation. According to this model, a planetary body is assumed to be composed primarily of silicate minerals and NiFe (i.e. a mixture of nickel and iron). If temperatures within this body reach about 1500 K, the minerals and the metals will melt. This will produce an emulsion in which globules of liquid NiFe are dispersed in a magma of liquid silicates, the two being immiscible. Because the NiFe globules are denser than the silicates, they will sink under the influence of gravity to the centre of the planetary body–in effect, the globules of metal will "rain out" from the emulsion to the centre, forming a core.According to the rain-out model, core formation was a relatively rapid process, taking a few dozen millennia to reach completion. This occurred at the end of a lengthy process in which the planets were assembled from colliding planetary embryos. Only the collisions of such large embryos could generate enough heat to melt entire bodies. Furthermore, it was only after all of the iron and nickel delivered by impacting bodies had arrived that core formation could proceed to completion.However, this process of core formation was preceded by a long period of partial differentiation, in which some of the nickel and iron within the planetary embryos had begun to separate.The rain-out model can be invoked to explain core formation in all the terrestrial planets, given that these consist primarily of silicates, nickel and iron. It can also be adapted to account for core formation in smaller bodies composed of ices and silicates. In such a case, it would be the denser silicates which would rain out to form a rocky core, while the volatile components would form an icy mantle.".
- Rain-out_model wikiPageExternalLink books?id=cO3OaBTYuEgC.
- Rain-out_model wikiPageID "15448809".
- Rain-out_model wikiPageLength "2405".
- Rain-out_model wikiPageOutDegree "17".
- Rain-out_model wikiPageRevisionID "618198336".
- Rain-out_model wikiPageWikiLink Category:Planetary_science.
- Rain-out_model wikiPageWikiLink Core_(geology).
- Rain-out_model wikiPageWikiLink Emulsion.
- Rain-out_model wikiPageWikiLink Immiscible.
- Rain-out_model wikiPageWikiLink Iron.
- Rain-out_model wikiPageWikiLink Iron_catastrophe.
- Rain-out_model wikiPageWikiLink Iron–nickel_alloy.
- Rain-out_model wikiPageWikiLink Magma.
- Rain-out_model wikiPageWikiLink Miscibility.
- Rain-out_model wikiPageWikiLink NiFe.
- Rain-out_model wikiPageWikiLink Nickel.
- Rain-out_model wikiPageWikiLink Planet.
- Rain-out_model wikiPageWikiLink Planetary_core.
- Rain-out_model wikiPageWikiLink Planetary_differentiation.
- Rain-out_model wikiPageWikiLink Planetary_embryo.
- Rain-out_model wikiPageWikiLink Planetary_science.
- Rain-out_model wikiPageWikiLink Protoplanet.
- Rain-out_model wikiPageWikiLink Scientific_modelling.
- Rain-out_model wikiPageWikiLink Silicate_mineral.
- Rain-out_model wikiPageWikiLink Silicate_minerals.
- Rain-out_model wikiPageWikiLink Terrestrial_planet.
- Rain-out_model wikiPageWikiLink Volatiles.
- Rain-out_model wikiPageWikiLinkText "Rain-out model".
- Rain-out_model hasPhotoCollection Rain-out_model.
- Rain-out_model wikiPageUsesTemplate Template:Cite_book.
- Rain-out_model wikiPageUsesTemplate Template:Geology-stub.
- Rain-out_model subject Category:Planetary_science.
- Rain-out_model hypernym Model.
- Rain-out_model type Person.
- Rain-out_model type Sub-discipline.
- Rain-out_model comment "The rain-out model is a model of planetary science which describes the first stage of planetary differentiation and core formation. According to this model, a planetary body is assumed to be composed primarily of silicate minerals and NiFe (i.e. a mixture of nickel and iron). If temperatures within this body reach about 1500 K, the minerals and the metals will melt.".
- Rain-out_model label "Rain-out model".
- Rain-out_model sameAs m.03m9ppy.
- Rain-out_model sameAs Q7284446.
- Rain-out_model sameAs Q7284446.
- Rain-out_model wasDerivedFrom Rain-out_model?oldid=618198336.
- Rain-out_model isPrimaryTopicOf Rain-out_model.