El enjambre filoniano básico intrusivo en el Complejo plutónico Táliga-Barcarrota (Ossa-Morena, Badajoz)
Two families ofdykes are distinguished in the Ta/iga-Barcarrota area with directions NW-SE and E-W (the younger one). Chemical affinity is tholeiitic shifting from 01+Hy normative in the first to Q+Hy normative in the second. A 1<-Ar whole rock age gives 250±5 M. A. (i.e. Upper Permian). Evol...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1991 |
| 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:10272/18056 |
| Acceso en línea: | http://hdl.handle.net/10272/18056 |
| Access Level: | acceso abierto |
| Palabra clave: | Tholeiitic magmatism Hercynian beltl geochronology |
| Sumario: | Two families ofdykes are distinguished in the Ta/iga-Barcarrota area with directions NW-SE and E-W (the younger one). Chemical affinity is tholeiitic shifting from 01+Hy normative in the first to Q+Hy normative in the second. A 1<-Ar whole rock age gives 250±5 M. A. (i.e. Upper Permian). Evolution by olivine and minor pyroxene fractionation is proposed. These dykes likely represent an earlier post Hercynian ensialic extensional magmatism which should be taken into a account in any geodynamic model of post Hercynian evolution of the Iberian Peninsula |
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