Edad 40Ar/39Ar (539,06 ± 3 Ma) de los anfíboles del Granitoide del Escribano: arco volcánico cadomiense (Zona de Ossa-Morena)
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Abstract
El granitoide del Escribano es un cuerpo granítico-diorítico localizado
en el borde norte del Sector de Obejo-Valsequillo-Puebla de la Reina en la
Zona de Ossa-Morena (ZOM). Al sur está cubierto en discordancia por las arcosas
y conglomerados de la Formación Torreárboles, que representa la base
del Cámbrico Inferior trilobítico. Por el norte el contacto es mecánico (tectónico).
Su enfriamiento ha sido datado por Ar/Ar sobre anfíboles en 539 ± 3
Ma, lo que confirma su pertenencia al arco volcánico cadomiense de la ZOM
El Escribano Granitoid is a granite-diorite body located on the northern edge of Obejo-Valsequillo-Puebla de la Reina Sector in the Ossa-Morena Zone (ZOM). It is covered unconformably by conglomerates and arkoses of Torreárboles Formation, which represents the base of trilobitic Lower Cambrian. To the north the contact is tectonic. The granitoid has been dated by Ar/Ar on amphibole at 539 ± 3 Ma, confirming its relationship to the Cadomian volcanic arc of the ZOM
El Escribano Granitoid is a granite-diorite body located on the northern edge of Obejo-Valsequillo-Puebla de la Reina Sector in the Ossa-Morena Zone (ZOM). It is covered unconformably by conglomerates and arkoses of Torreárboles Formation, which represents the base of trilobitic Lower Cambrian. To the north the contact is tectonic. The granitoid has been dated by Ar/Ar on amphibole at 539 ± 3 Ma, confirming its relationship to the Cadomian volcanic arc of the ZOM
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