Browsing by Author "Basei, M.A.S."
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- O magmatismo mais antigo da Faixa Piritosa Ibérica: dados geocronológicos UPb da Jazida do Salgadinho, CercalPublication . 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, IgorSUMMARY: 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.