Universidad Complutense de Madrid
E-Prints Complutense

Crustal sources in Lower Palaeozoic rocks from NW Iberia: insights from laser ablation U–Pb ages of detrital zircons

Impacto

Downloads

Downloads per month over past year

Fernández Suárez, Javier and Gutiérrez Alonso, Gabriel and Jenner, G.A. and 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 . pp. 1065-1068. ISSN 0016-7649

[img]
Preview
PDF
Creative Commons Attribution Non-commercial No Derivatives.

658kB

Official URL: https://jgs.lyellcollection.org/content/156/6



Abstract

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 Pre-cambrian crustal sources in NW Iberia. The age grouping dated 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.


Item Type:Article
Uncontrolled Keywords:NW Iberia, Laser ablation methods, U–Pb, Zircon
Subjects:Sciences > Geology > Geodynamics
ID Code:59098
Deposited On:13 Feb 2020 12:45
Last Modified:13 Feb 2020 12:45

Origin of downloads

Repository Staff Only: item control page