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Methods of pluton emplacement : ウィキペディア英語版 | Methods of pluton emplacement
Methods of pluton emplacement are not yet fully understood, but there are many different proposed pluton emplacement mechanisms. Stoping, diapirism and ballooning are the widely accepted mechanisms. There is now evidence of incremental emplacement of plutons. This means that methods such as stoping and diapirism occur rarely in nature. ==Stoping== (詳細はpluton.〔 Stoping is an important emplacement mechanism in a variety of tectonic setting and has been widely used to explain discordant pluton contacts.〔Glazner A., F., and Bartley J., M., 2006, Is stoping a volumetrically significant pluton emplacement process? 2006 , GSA Bulletin, v. 118, p. 1185 - 1195〕 The most common signatures of stoping are sharp discordant contacts between plutons and wall rocks and a lack of ductile deformation of the wall rocks. Other characteristics of stoping include the presence of xenoliths in the plutons, evidence for the rotation of xenoliths and geochemical evidence of magma contamination.〔
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