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Principal component analysis (PCA) and mineral associations of litoraneous faci...
Marques, Wanessa Sousa; Sial, Alcides Nobrega; Menor, Eldemar de Albuquerque; Ferreira, Valderez Pinto; Freire, George Satander SáThe distribution of mineral phases according to the provenance of carbonate and terrigenous facies of carbonate sediments from a large area of the continental shelf of northeast Brazil was investigated using a major element multivariate analysis approach. Heavy minerals such as ilmenite are restricted to the litoraneous facies of the continental shelf of the states of Paraı´ba and Pernambuco, and clay minerals ...
Origem, significado petrogenético e idade dos ortognaisses Terra Nova: registro...
Lima, Haroldo Monteiro; Ferreira, Valderez Pinto; Santos, Edilton José dos; Pimentel, Márcio Martins; Santos, Lauro Cézar Montefalco de LiraThe Terra Nova syenitic orthogneiss is intrusive into the Feira Nova fold belt of the Vertentes Complex, eastern Rio Capibaribe Terrane of the Borborema Province, northeastern Brazil. The orthogneisses occurs as tabular intrusions that have been folded by transcurrent tectonics related to the Glória do Goitá shear zone, which limits the paleoproterozoic basement and the Feira Nova fold belt. The rock is banded ...
Incursão positiva de 'delta''POT.13' C (Ediacarana) na Formação Tamengo, Grupo ...
Ferreira, Valderez Pinto