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Título:
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Preliminary apatite-fission track geochronology of the Montaña Blanca-Milocho, alkaline pluton, (NW Fuerteventura, Canary Islands, Spain)
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Autores:
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Ignacio San José, Cristina de ;
Muñoz García, Mercedes ;
Sagredo Ruiz, Juana ;
Barbero González, Luis C.
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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., 2002
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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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The mafic-ultramafic, alkaline Montana Blanca-Milocho pluton, which is part o f the northernmost outcrop of the Basal Complex of the island of Fuerteventura, Canary Islands, is spatially associated to the Jablitos alkaline-carbonatitic complex. Alkaline clinopyroxenites occurring in the periphery o f both intrusive bodies bear strong petrographic, mineralogical and geochemical similarities. However, the study o f a possible genetic relationship between them was so far hindered by the complete absence of geoclironological data. High apatite abundances in these rocks has allowed the application o f the fission track techniques as a geoclironological tool. Nevertheless, in samples were perovskite occurs the lack o f U in apatite, the K-Ar method had to be used. The 25 and 29 Ma fission tracks central ages obtained are well in agreement with theexpected emplacement age o f these shallow intrusive rocks, and also with published and new K-Ar ages. Thus, a genetic relationship between these ultramafic alkaline clinopyroxenites is here proposed.
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En línea:
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https://eprints.ucm.es/id/eprint/61121/1/P%C3%A1ginas%20desdeGeotemas4.pdf
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