Características composicionales y procesos de evolución magmàtica en el complejo volcánico sur-lll de Fuerteventura (Islas Canarias)
The Southern Volcanic Complex III is form ed by basalts, a lesser am o u n t o f trachybasalts and some scarce trachytes, a ll o f them m ild ly alkaline. Crystal fra ction ation w a s in an early stage, controle d by crystallisation and extraction of olivine (60%) and clinopyroxene (40%). The cryst...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1996 |
| País: | España |
| Institución: | Universidad de Huelva (UHU) |
| Repositorio: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Idioma: | español |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/12251 |
| Acceso en línea: | http://hdl.handle.net/10272/12251 |
| Access Level: | acceso abierto |
| Palabra clave: | Canary Islands Fuerteventura Old Basaltic Series Geochemistry |
| Sumario: | The Southern Volcanic Complex III is form ed by basalts, a lesser am o u n t o f trachybasalts and some scarce trachytes, a ll o f them m ild ly alkaline. Crystal fra ction ation w a s in an early stage, controle d by crystallisation and extraction of olivine (60%) and clinopyroxene (40%). The crystallisation path is, then, ruled by dominant clynopyroxene and lesser proportions of plagioclase and Ti-magnetite. Later extraction of plagioclase and clinopyroxene and some other differentation processes, could account for the presence of trachytes.The Angostura Formation representing the most recent activity within the entire Southern V o lc a n ic C om ple x, consists o f s tr o n g ly a lk a lin e an d u ltra a lk a lin e rocks. These rocks are scarcely differentiated, though certain fractionation tendences dominated by olivine extraction are observed |
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