Galindo Francisco, Mª del Carmen and Muñoz García, Mercedes and Casquet, César (1991) El enjambre filoniano básico intrusivo en el Complejo plutónico Táliga-Barcarrota (Ossa-Morena, Badajoz). Geogaceta, 10 . pp. 87-90. ISSN 0213-683X
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Abstract
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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Tholeiitic magmatism, Hercynian belt, Geochronology. |
| Subjects: | Sciences > Geology > Petrology |
| ID Code: | 11538 |
| Deposited On: | 16 Nov 2010 11:38 |
| Last Modified: | 03 Jun 2013 10:25 |
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