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New insights from U-Pb zircon dating of Early Ordovician magmatism on the northern Gondwana margin: The Urra Formation (SW Iberian Massif, Portugal)

Sola, A. Rita; Pereira, M. Francisco; Williams, Ian; Ribeiro, M.L.; Neiva, A.M.R.; Montero, P.; Bea, F.; Zinger, T.


The Central Iberian-Ossa-Morena transition zone (SW Iberian Massif) represents a segment of the northern Gondwana margin with a long geodynamic evolution, characterized by the superposition of Cadomian and Variscan events. The Early Ordovician is mainly represented by porphyritic felsic volcaniclastic rocks (the Urra Formation) that pass up into a siliciclastic sediments typical of the Central Iberian Zone (Lower Ordovician Armorican Quartzite Formation). The Urra Formation unconformably...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Tectonophysics
DOI: 10.1016/j.tecto.2008.01.011


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