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Título:
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Radiometric dating and geochemistry of a tuff horizon from a mammal-bearing lacustrine sequence, Miocene Bicorp Basin, eastern Spain
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Autores:
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Anadon, P. ;
Mitjavila, J.M. ;
Utrilla, R. ;
Vázquez, A. ;
López Martínez, Nieves
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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, 1995
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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: Geoquímica
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Tipo = Artículo
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Resumen:
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The basin-fill sequence from the Bicorp Basin (Eastern Spain) comprises a lower alluvial unit and an upper lacustrine unit. The lower part of the lacustrine sequence includes a tuff bed, interbedded between two marnmal-bearing horizons which have yielded fossil rodents characteristic of the MN 10 standard mammal unit (Late Vallesian, Late Miocene). K-Ar age determinations on the tuff have provided a radiometric age averaging 9.6 ± 0.2 Ma (weighted average of two samples) for this ash fall deposito Major, trace and RE element analyses indicate that this tuff originated from a calc-alkaline evento The geochemical features of the Bicorp tuff, when compared with those from other calk-alkaline rocks from the Western Mediterranean, are not completely coincident. The stratigraphic correlation between the fossil mammal sites and the radiometrically-dated tuff allows a more precise calibration between the Late Miocene biochronological and geochronometric scales
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En línea:
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https://eprints.ucm.es/id/eprint/29208/1/Art08%20%288%29.pdf
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