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Título:
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Ophiolites in the Variscan suture of NW Iberia I: Distribution and
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Autores:
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Sánchez Martínez, Sonia ;
Arenas Martín, Ricardo
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Tipo de documento:
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texto impreso
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Editorial:
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Sociedad Geológica de España., 2016
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Geología: Petrología
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Tipo = Artículo
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Resumen:
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In the NW Iberian Massif, in the Galicia region, several allochthonous complexes (Cabo Ortegal, Órdenes and Malpica-Tui) contain a rootless Variscan suture that can be followed along the belt. The allochthonous complexes include two different continental terranes and several ophiolitic units sandwiched in between them. Two different ophiolitic belts exist, with different structural position and chronology. The lower ophiolitic units consist of the Bazar and Vila de Cruces ophiolites and are characterized by c. 500 Ma protolith ages. The upper ophiolitic units are composed of the Careón, Purrido and Moeche ophiolites, and contain mafic-ultramafic sequences dated at c. 395 Ma. This younger group represents the most common ophiolites in the Variscan Orogen. Moreover, a thick serpentinite mélange (Somozas Mélange) can also be included among the ophiolitic sequences of the Variscan suture.
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En línea:
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https://eprints.ucm.es/60199/1/P%C3%A1ginas%20desdeGeo_temas16_ss_simposios-12.pdf
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