Advisor(s)
Abstract(s)
SUMMARY: New U-Pb geochronological data (SHRIMP/LA-ICP-MS) is presented for zircons of volcanic rocks and dark shales of the Salgadinho deposit, located in Cercal, Iberian Pyrite Belt. Results show that the main magmatic event was placed between 387-392 Ma, indicating the oldest volcanism in the Iberian Pyrite Belt so far. Inherited and detrital zircon ages suggest affinity to Laurussian and Avalonia (s.l.) peri-Gondwanan sources, which provides additional constraints on the paleogeographic positioning of the Iberian Pyrite Belt during the Variscan Cycle.
Description
Resumo alargado
Keywords
Iberian Pyrite Belt Salgadinho deposit U–Pb geochronology Faixa Piritosa Ibérica Jazida do Salgadinho Geocronologia U-Pb
Citation
Feitoza, L.M.; Santos, Telmo M. Bento dos; Amaral, Joao Lains; Solá, A. Rita; Tassinari, Colombo C. G.; Basei, M.A.S.; Matos, João Xavier; Albardeiro, Luís; Morais, Igor (2023) - O magmatismo mais antigo da Faixa Piritosa Ibérica: dados geocronológicos UPb da Jazida do Salgadinho, Cercal. In: Lopes, F. C., Dinis, P. A., Duarte, L. V. e Cunha, P. P. (Coords.). XI Congresso Nacional de Geologia: Geociências e Desafios Globais. Livro de Resumos. Coimbra, 16- 20 julho de 2023, Departamento de Ciências da Terra da Universidade de Coimbra (eds.), p. 337-338. ISBN: 978-989-98914-8-7
Publisher
Departamento de Ciências da Terra da Universidade de Coimbra