Iron oxide-apatite (IOA) occurrences have recently been identified in the western sector of the Neoproterozoic Santa Quitéria magmatic arc (Ceará state, northeast Brazil), close to the boundary with the Paleozoic Parnaíba Basin. The IOA mineralization is hosted by albitized metadiorites and metavolcano-sedimentary rocks, which are crosscut by a late- to post-Brasiliano/Pan-African biotite granite intrusion with...
W-Mo skarns deposits in the Borborema Province have been known since the 40’s, however, until this study there were no records of Fe-Cu skarns. In Ceará State, Brazil, the first occurrences of Fe-Cu skarns were identified recently in the Magmatic Arc of Santa Quiteria, product of superposition of several magmatic arcs, ranging from juvenile arc (870 – 800 Ma), up to continental collision (625 – 600 Ma). The ska...
SANTOS, Ticiano José Saraiva dos; NOGUEIRA, José de Araújo Neto; FETTER, Allen F. Petrografia e litogeoquímica das rochas do embasamento cristalino da região de Granja – CE. Fortaleza, v.14, n.1 (2001).; O embasamento do Domínio Médio Coreaú, porção extremo noroeste da Província Borborema, é caracterizado com base em estudos petrográficos e análise química de elementos maiores, em três seqüências. A primeira co...