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DIGITAL.CSIC
Article . 2008 . Peer-reviewed
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Datos geocronológicos sobre el granito de La Cabrera

Authors: Vialette, Y.; Bellido Mulas, Félix; Fúster, J. M.; Ibarrola, E.;

Datos geocronológicos sobre el granito de La Cabrera

Abstract

El Plutón de La Cabrera constituye la intrusión granítica tardihercínica más oriental del Sistema Central español. Su carácter es netamente alóctono y su emplazamiento se verifica con posterioridad a los procesos metamórficos y deformativos de este ciclo. La composición petrológica predominante es granítica (adamellítica), existiendo localmente facies marginales granodioríticas, y una gran proporción de rocas aplíticas y de grano fino muy diferenciadas. Este último tipo de rocas tiene relaciones de contactos variables frente a los granitos de grano grueso, a los que puede estar cortando nítidamente o bien presentar limites difusos y transicionales, generalmente en los afloramientos de mayores dimensiones. Con el fin de establecer sus relaciones cronológicas se seleccionaron dos series, una de granitos de grano grueso y otra de la facies microgranuda sobre las que se han hecho determinaciones de Rb-Sr. Ambas series dan buenas isocronas con los valores de 310 ±14 MA. y 87Sr/86Sr inicial de 0,7094 para la facies de grano grueso, y 287 ±5 MA. y 87Sr/68Sr inicial de 0,7073 para la facies de grano fino. Se discuten las diferencias encontradas en estos resultados.

Peer reviewed

Country
Spain
Related Organizations
Keywords

Datos geocronológicos, Sistema Central, Granitos tardihercínicos, La Cabrera, Adamelitas

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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