La fábrica magnética de los lamprófidos alcalinos del plutón granitoideo de Panticosa. Aplicación al análisis de la etapa extensional del magmatismo tardivarisco pirenaico (provincia de Huesca)
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Abstract
El plutón varisco de Panticosa está atravesado por dos conjuntos consecutivos de diques de lamprófidos, composicionalmente diferentes y que se emplazaron según direcciones distintas: 1) espesartitas minoritarias,
con direcciones N-S, y 2) camptonitas, predominantes, de direcciones O-E a NO-SE. El estudio de ASM refleja las diferencias en la mineralogía magnética entre ambas familias y permite elaborar un modelo temporal de emplazamiento, en relación con el marco estructural, consistente en dos etapas; una primera, de creación de un sistema de diques subperpendiculares bajo el efecto de una compresión generalizada NE-SO, y una posterior, de deformación asociada a una dirección de compresión NO-SE
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References
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