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...
| Authors: | , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 1993 |
| Country: | México |
| Institution: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repository: | Geofísica Internacional |
| Language: | Spanish |
| OAI Identifier: | oai:revistagi.geofisica.unam.mx:article/1403 |
| Online Access: | http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1403 |
| Access Level: | Open access |
| Keyword: | Cámara magmática Mezcla Cristalización fraccionada Andesitas Volcán Fuego de Colima México Magma chamber Andesites Mixing Crystal fractionation Fuego de Colima Volcano Mexico |
| Summary: | 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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