Author(s):
Santos, Telmo M. Bento Dos ; Chichorro, Martim ; Carvalho, D. ; Cachapuz, P. ; Solá, A. Rita ; Dantas, E. ; Romão, José ; Moreira, Noel ; Silva, I. Dias da ; Clavijo, E. ; Díez-Montes, Alejandro ; Valverde-Vaquero, Pablo ; Santos, R. V. ; Linnemann, Ulf
Date: 2023
Persistent ID: http://hdl.handle.net/10400.9/4101
Origin: Repositório do LNEG
Subject(s): U-Pb geochronology; Zircon; Detrital provenance; Cadomian Orogeny; Geocronologia U-Pb; Zircão; Proveniência detrítica; Orogenia Cadomiana
Description
SUMMARY: Geochronological data from the pre-Mesozoic basement of the Lusitanian Basement (West of the Porto-Tomar Fault) was obtained. Results show a predominant Cadomian/Pan-African and Eburnean inheritance/source, placing this sector as a peri-Gondwanan domain. However, two major differences can be seen in the data: samples with a clear absence in Mesoproterozoic ages vs. samples with a clear presence of these ages and Silurian-Devonian ages. If the former show clear signs of affinity with the Ossa-Morena Zone, the latter are similar to the South Portuguese Zone, being one of the samples, probably deposited in the Middle-Upper Devonian, interpreted as having a mixed source.
