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Título : Crustal sources in lower palaeozoic rocks from NW Iberia: insights from laser ablation U-Pb ages of detrital zircons
Autor(es) : Fernández Suárez, Javier
Gutiérrez Alonso, Gabriel
Jenner, G. A.
Tubrett, M. N.
Palabras clave : Rocas
Paleozoico
España
Laser
NW Iberia
Laser ablation methods
U-Pb
Zircon
Fecha de publicación : 1999
Editor : Geological Society (Londres, Gran Bretaña)
Citación : Fernández Suárez, J., Gutiérrez Alonso, G.,Jenner, G. A.,Tubrett, M. N. (1999). Crustal sources in lower palaeozoic rocks from NW Iberia: insights from laser ablation U-Pb ages of detrital zircons. "Journal of the Geological Society",156, 1065-1068.
Resumen : Detrital zircons from greywackes belonging to an Ordovician volcanosedimentary-igneous complex in NW Spain were dated using the laser ablation-inductively coupled plasma-mass spectrometry technique. U-Pb results indicate the existence of three Precambrian crustal sources in NW Iberia. The age grouping datetd at c. 590-620 Ma. confirms the presence of a Cadomian-Avalonian basement in this zone. The second age group (c. 1.1-1.2 Ga) is the first evidence for a Grenvillean age crustal component in NW Iberia. The age grouping dated at c. 1.9-2.0 Ga corresponds to the age of the Icartian igneous basement exposed in other areas of the European Variscides.
Descripción : Estudio de las rocas paleozoicas del Noroeste de España
URI : http://hdl.handle.net/10366/19421
http://hdl.handle.net/10366/19421
Aparece en las colecciones: DGL. Artículos del Departamento de Geología

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