El enjambre filoniano básico intrusivo en el Complejo plutónico Táliga-Barcarrota (Ossa-Morena, Badajoz)
Two families of dykes are distinguished in the Taliga-Barcarrota area with directions NW-SE and E-W (the younger one). Chemical affinity is tholeiitic shifting from Ol+Hy normative in the first to Q+Hy normative in the second. A K-Ar whole rock age gives 250±5 M. A. (i.e. Upper Permian). Evolution b...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1991 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | español |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/56933 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/56933 |
| Access Level: | acceso abierto |
| Palabra clave: | 552.3(462.22) Tholeiitic magmatism Hercynian belt Geochronology. Petrología |
| Sumario: | Two families of dykes are distinguished in the Taliga-Barcarrota area with directions NW-SE and E-W (the younger one). Chemical affinity is tholeiitic shifting from Ol+Hy normative in the first to Q+Hy normative in the second. A K-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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