Results 21 to 30 of about 1,323 (166)

Origin and metamorphism of graphite from Formiga, Minas Gerais (Brazil)

Brazilian Journal of Geology, 2021
During the Paleoproterozoic Era, the Brazilian cratons experienced orogenic events that modified the archean basement and sedimentary successions. In the southern São Francisco Craton, it can be recognized evidence of an orogenic event that happened ...
Luiza Carneiro de Rezende, Alexandre de Oliveira Chaves, Sérgio Luis Lima de Moraes Ramos   +2 more
doaj   +1 more source

Evidence of Paleoproterozoic phosphogenesis in the Salvador-Curaçá Orogen (Tanque Novo-Ipirá Complex), northeastern São Francisco Craton, Brazil

Brazilian Journal of Geology, 2021
This paper analyzes mineralogical, geochemical, and geochronological aspects, along with the effect of hydrothermal/metasomatic overprints, to identify the presence of primary phosphate as well as depositional and paleoenvironmental conditions in marble ...
Tatiana Silva Ribeiro, Aroldo Misi, Luís Rodrigues dos Santos de Oliveira, José Haroldo da Silva Sá, David Debruyne, Ib Silva Câmara   +5 more
doaj   +1 more source

Data for: The development of a Meso- to Neoarchean rifting-convergence-collision-collapse cycle over an ancient thickened protocontinent in the south São Francisco craton, Brazil

, 2020
Geochemistry and geochronology of the Pitangui Greenstone belt, South São Francisco craton ...
Brando Soares, M
core   +2 more sources

Geoquímica e geocronologia da Suíte Paciência: implicações para o fim da evolução riaciana do Bloco Itacambira-Monte Azu

Geologia USP. Série Científica, 2018
Diversos corpos plutônicos alcalinos de alto potássio paleoproterozoicos ocorrem no embasamento do cráton São Francisco, bem como no embasamento dos orógenos que o bordejam. Localizado no bordo oeste do cráton São Francisco, o bloco Itacambira-Monte Azul
Samuel Moreira Bersan, André Danderfer Filho, Francisco Abreu, Cristiano Lana   +3 more
doaj   +1 more source

Structural analysis of the Rio Preto fold belt (northwestern Bahia / southern Piauí), a doubly-vergent asymmetric fan developed during the Brasiliano Orogeny

Anais da Academia Brasileira de Ciências, 2014
The Rio Preto fold belt borders the northwestern São Francisco craton and shows an exquisite kilometric doubly-vergent asymmetric fan structure, of polyphasic structural evolution attributed exclusively to the Brasiliano Orogeny (∼600-540 Ma).
FABRÍCIO A. CAXITO, ALEXANDRE UHLEIN, LUIZ F.G. MORALES, MARCOS EGYDIO-SILVA, JULIO C.D. SANGLARD, TATIANA G. DIAS, MONICA C.O. MENDES   +6 more
doaj   +1 more source

Archean crustal evolution in the Southern São Francisco craton, Brazil: Constraints from U-Pb, Lu-Hf and O isotope analyses [PDF]

, 2016
In this study we present U–Pb and Hf isotope data combined with O isotopes in zircon from Neoarchean granitoids and gneisses of the southern São Francisco craton in Brazil.
Albert, Capucine, Dopico, Carmen Martínez, Gerdes, Axel, Stevens, Gary, Lana, Cristiano, Storey, Craig, Farina, Federico   +6 more
core   +2 more sources

Stratigraphy of the Pitangui Synclinorium, northwest of the Quadrilátero Ferrífero mineral province - Brazil: magmatism and sedimentation from Archean to Neoproterozoic

Journal of the Geological Survey of Brazil, 2023
The Pitangui Synclinorium is located in the northwestern portion of the Quadrilátero Ferrífero mineral province, São Francisco Craton, in southeast Brazil.
Marcelo de Souza Marinho, Joana Reis Magalhães, Julio Cesar Lombello, Joanna Araújo, Luiz Paulo Pedrosa Di Salvio, Rosane Nascimento Silva, Denise Canabrava Brito, Wilson Luis Feboli, Camila Franco Basto   +8 more
doaj   +1 more source

Field Workshop - The Paleoproterozoic record of the São Francisco Craton Paleocontinent and Late Paleoproterozoic to Neoproterozoic covers Field

, 2019
The field workshop on the Paleoproterozoic record of the São Francisco craton (SFC) has been designed to provide a view on the aspects of the Paleoproterozoic ...
Oliveira, Elson Paiva, Chemale Jr, F., Chemale Jr, Farid, Oliveira, E.P., Teixeira, Wilson   +4 more
core   +1 more source

The Vazante and Canastra groups revisited: Sm-Nd and Sr isotopes - evidence for contribution from Tonian intraplate magmatism during passive margin development along the SW São Francisco margin, Brazil

Brazilian Journal of Geology, 2019
Combined Sm-Nd isotope studies and U-Pb ages of detrital zircons have shown significant differences between the provenance patterns of Neoproterozoic metasedimentary successions in the Southern Brasília belt.
Manuela de Oliveira Carvalho, Claudio de Morisson Valeriano, Carla Cristine Aguiar Neto, Gustavo Diniz Oliveira, Monica Heilbron   +4 more
doaj   +1 more source

Proterozoic taphrogenic history recorded in the pre-collisional sedimentary basins of the Araçuaí Orogen, Southern Espinhaço Range, Southeastern Brazil [PDF]

Brazilian Journal of Geology
The Proterozoic pre-collisional basins of the Araçuaí orogen consist of a succession of superimposed basins that overlie the eastern margin of the São Francisco Craton.
Rogerio Rodrigues da Silva
doaj   +1 more source