Caracterização litoquímica e geocronológica de granitos do Batólito Águas Belas-Canindé, no Domínio Pernambuco-Alagoas, na Província Borborema

摘要: The plutons Serra da Caicara (616 ± 3 Ma), composed by coarse-grained hornblende quartz syenite to alkali quartz feldspar syenite; Santana do Ipanema (621 5 monzogranites equigranular sienogranites; and Maravilha (627 porphyritic with strong magmatic foliation, are some of the intrusions that make up Aguas Belas-Caninde Batholith, Dominio Pernambuco-Alagoas, Borborema Province, northeastern Brazil. U-Pb (SHRIMP) ages in zircon indicate intrusion associated regional low-angle generated during convergence of Brasiliano Orogenesis. granites syenites high-K calc-alkaline shoshonitic, metaluminous to lightly peraluminous, magnetite magnesian series. chondrite-normalized REE patterns indicate moderate high fractionation, present (La/Lu) N between 14 82, slightly negative Eu anomalies. Chondrite‑normalized incompatible elements show marked spikes Nb-Ta Ti, typical magmas related subduction zones. Amphibole biotite three have compositions calcalkaline series values of Fe # similar those total rock. Geochemical data suggest magma was arc environment, derived from fusion K basaltic rocks, under oxidizing conditions, evolved fractional crystallization.