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Petrogénesis de los diques alcalinos de Errigoiti (magmatismo de edad Cretácico Superior en la Cuenca Vasco-Cantábrica)

Authors: Sarrionandia Eguidazu, Fernando; Carracedo Sánchez, Manuel; Errandonea Martín, Jon; Eguiluz, Luis;

Petrogénesis de los diques alcalinos de Errigoiti (magmatismo de edad Cretácico Superior en la Cuenca Vasco-Cantábrica)

Abstract

En la localidad vizcaína de Errigoiti afloran una serie de diques emplazados en las secuencias volcanosedimentarias del Cretácico Superior. Estos diques, constituidos por rocas alcalinas, abarcan un amplio rango composicional (SiO=48.78-61.92%) que incluye basaltos alcalinos, traquiandesitas y tefrifonolitas. Los términos más básicos tienen características composicionales similares a los basaltos de tipo 0IB. Ninguna muestra representa composiciones primarias, no obstante sus relaciones elementales Dy/Yb (2,-2,3), La/Yb (20-28) y Ce/Y (3,2-3,5) sugieren que los magmas que alimentaron estos diques se generaron por bajas tasas de fusión (1,6-1,9%) de un manto astenosférico enriquecido, localizado a una profundidad de unos 70 km. La diversidad litològica responde a la fraccionación de olivino y clinopiroxeno a partir del magma básico original

Country
Spain
Related Organizations
Keywords

Geochemistry, Manto, Cretácico, Basque-Cantabrian Basin, Geoquímica, Dike, Cuenca Vasco-Cantábrica, Mantle, Dique, Cretaceous

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selected citations
These citations are derived from selected sources.
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).
BIP!Citations provided by BIP!
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.
BIP!Impulse provided by BIP!
0
Average
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