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Estudios Geologicos
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Petrogénesis del plutón monzogranítico peralumínico de Santa Eufemia (Batolito de los Pedroches, Córdoba)

Authors: García Casco, Antonio; Pascual Martínez, Emilio; Fenoll Hach-Ali, P.;

Petrogénesis del plutón monzogranítico peralumínico de Santa Eufemia (Batolito de los Pedroches, Córdoba)

Abstract

El plutón de Santa Eufemia forma parte del batolito de Los Pedroches, situado en el extremo sudoccidental de la Zona Centro-Ibérica del Macizo Hercínico español. Este batolito de carácter epizonal y postcinemático está constituido por tres tipos plutónicos mayoritarios: granodioritas biotíticas± anfíbol, monzogranitos biotítico-cordieríticos porfídicos y leucogranitos cordieríticos de tendencia aplítica. El plutón de Santa Eufemia está formado por monzogranitos porfídicos y leucogranitos, ambos con cordierita. Los monzogranitos presentan distintos tipos de enclaves, siendo los más comunes los enclaves monzograníticos porfídicos de grano fino y los enclaves con biotita-plagioclasa-cordierita. El análisis petrográfico, estructural y geoquímico de elementos mayores y trazas parece descartar una relación genética entre las granodioritas biotíticas±anfíbol y los monzogranitos, y permite considerar al plutón como el resultado de una historia evolutiva compleja de un magma monzogranítico, producto de la fusión parcial de una fuente metasedimentaria, cuya heterogeneidad composicional proviene de la mezcla de un fundido no mínimo y material restítico reequilibrado (restitas secundarias) durante la evolución ortomagmática del mismo. El producto final de esta evolución es la segregación de un fundido residual saturado en fluidos en el nivel de intrusión actual, emplazándose masas y diques de leucogranitos y exsolviéndose una fase fluida en condiciones supercríticas, relacionada con la recristalización tardimagmática de algunas fases minerales (moscovita, albita, cuarzo, turmalina, topacio), la removilización de ciertos elementos incompatibles (Rb, Cs, Li, Be, Sn, Nb) por interacciones roca-fluido y la formación de venas periplutónicas de wolframita-arsenopirita-cuarzo.

Country
Spain
Keywords

españa, España, Hercynian epizonal peraluminous granites, Epizonales hercínicos, Peraluminous granites, granitos peralumínicos epizonales hercínicos, Granitos peralumínicos, Petrogenesis, batolito Los Pedroches, Hercynian epizonal, Petrogénesis, geochemistry, QE1-996.5, Batolito de los Pedroches, Geology, geoquímica, petrogénesis, Geochemistry, Batolito Los Pedroches, petrogenesis, Spain, batolito los pedroches, Granitos peralumínicos epizonales hercínicos, Geoquímica, Los Pedroches batholith

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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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