Multi-stage magma mixing in the pre-caldera series of Fuego de Colima volcano
Mineralogical and geochemical data from pre-caldera lavas of Volcán Fuego de Colima indicate that both fractional crystalization and mixing processes occurred together. Three types of mixing are evidenced: (i): Mixing between fresh input of mafic magma and olivine-clinopyroxene cumulates in the lowe...
| Autores: | , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 1993 |
| País: | México |
| Recursos: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repositório: | Geofísica Internacional |
| Idioma: | espanhol |
| OAI Identifier: | oai:revistagi.geofisica.unam.mx:article/1403 |
| Acesso em linha: | http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1403 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Cámara magmática Mezcla Cristalización fraccionada Andesitas Volcán Fuego de Colima México Magma chamber Andesites Mixing Crystal fractionation Fuego de Colima Volcano Mexico |
| Resumo: | Mineralogical and geochemical data from pre-caldera lavas of Volcán Fuego de Colima indicate that both fractional crystalization and mixing processes occurred together. Three types of mixing are evidenced: (i): Mixing between fresh input of mafic magma and olivine-clinopyroxene cumulates in the lower part of the magma chamber. (ii): Mixing, within the shallow chamber, between this deep juvenile magma (previously differentiated by crystal fractionation or not, ol-cpx enriched or not in an deeper magma chamber) and a differentiated magma, andesitic or dacitic in composition. (iii): mixing by convection between magmas previously differentiated by mixing and/or crystal fractionation at different levels in the magma chamber. |
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