Morfología de los circones como indicadores petrogenéticos de la asociación tonalita-leucograndito.el caso del plutón de Zarza la Mayor (Cáceres-España).
- Rubio Ordoñez, Álvaro 1
- Corretgé Castañón, Luis Guillermo 1
- Cuesta Fernández, Andrés 1
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1
Universidad de Oviedo
info
ISSN: 0213-683X
Año de publicación: 2006
Número: 41
Páginas: 187-190
Tipo: Artículo
Otras publicaciones en: Geogaceta
Resumen
Zarza la Mayor pluton is a good example of the tonalite-leucogranite association. A new survey has been carried out and some additional study of zircon morphologies has been performed. Detailed survey shows the true intrusive character of the leucogranite pinpointing to a ring-dyke emplacement mechanism. Zircon morphologies show different characteristics for the tonalite (anatectic, with zircon typologies S1- Q1-L1) and leucogranite (calc-alkaline, with zircon typologies S6-Q2). This apparent paradox is explained taking care of the strong assimilation of CXG metasediments (Neoproterozoic - Lower Cambrian) by a dioritic-tonalitic magma through piecemeal-stopping processes.