Fábrica magnética del plutón de Millares (Pirineo central, Huesca)

• T. Román ^[1] ; A. Casas ^[1] ; B. Oliva ^[1] ; C.Luis Liesa ^[1] ; R. Soto ^[2]
  1. [1] Universidad de Zaragoza

     Universidad de Zaragoza

     Zaragoza, España

     
  2. [2] Paul Sabatier University

     Paul Sabatier University

     Arrondissement de Toulouse, Francia

     
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 6, 4, 2004 (Ejemplar dedicado a: VI CONGRESO GEOLÓGICO DE ESPAÑA (Zaragoza, 12-15 julio, 2004)), págs. 331-334
• Idioma: español
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• Resumen

  • This work deals with the magnetic susceptibility and anisotropy of the Variscan Millares pluton in the Central Pyrenees. The Millares granite intrudes Cambro-Devonian metasediments ot the AxialZone of the Pyrenees. The zonation of low-field magnetic susceptibility indicates a concentric arrangement of rock-types, with more basic compositions at the external areas. From Anisotropy ofthe Magnetic Susceptibility measurements, the magmatic fabric of this pluton has been inferred.Magnetic foliations strike NE-SW and dip gently towards the NW. Magnetic lineations are scattered between NW-SE and NE-SW and plunge shallowly to the N. Although Magnetic foliation strikes mainly NE-SW, the magnetic lineation, the geometry of the pluton, and their relationship with the host-rock structure suggest an intrusión contemporary with a transpressional regime and NNE shortening.