Results 41 to 50 of about 42,196 (220)

Destruction of the lithosphere beneath the SW margin of the São Francisco Craton evidenced by refertilized and deformed mantle xenoliths

Journal of Petrology
The destruction of the cratonic root has been documented for multiple cratons worldwide and is characterized by severe lithospheric thinning, extensive extensional deformation, and intense thermal activity.
L. Braga, Tiago Jalowitzki, F. Gervasoni, Rodrigo Antonio Freitas Rodrigues, M. Mazzucchelli, T. Giovanardi, Marina Marques Dalla Costa, Roberto Santos, M. Rocha, R. Fuck, Georgina Marianela Rubiano Lorenzoni, G. Bertotto   +11 more
semanticscholar   +1 more source

The tectonic evolution of the Neoproterozoic Brasília Belt, central Brazil : a geochronological and isotopic approach [PDF]

, 2016
A Faixa Brasília é um dos mais completos orógenos Neoproterozoicos no Gondwana Ocidental. Durante os últimos dez anos, o rápido progresso no entendimento da evolução tectônica desse orógeno foi proporcionado pela produção de novos dados geocronológicos U-
Pimentel, Márcio Martins
core   +3 more sources

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

Diamictitos e"Cap Dolomites" sturtianos sobre o grupo jacobina - Araras, Norte de Campo Formoso - Bahia

Geologia USP. Série Científica, 2008
A ocorrência de diamictitos - provavelmente glaciais -, sotopostos a calcários no norte de Campo Formoso-BA, adjacências da vila de Araras, já havia sido observado"en passant" por alguns autores nas décadas de 60 e 70, e inclusive chega a fazer parte de ...
Benjamim Bley de Brito Neves, Augusto José de Cerqueira Lima Pedreira da Silva   +1 more
doaj   +1 more source

The Borrachudos Granitic Suite: Paleo- to Mesoproterozoic A-type Magmatism in the Southeastern São Francisco Craton (SE Brazil) [PDF]

Anais da Academia Brasileira de Ciências
The Borrachudos Granitic Suite (BGS) comprises an acid magmatism that occurred in the west edge of Araçuaí orogen (Late Neoproterozoic), southeastern Brazil.
IVO ANTONIO DUSSIN, MARIO LUIZ S.C. CHAVES, TANIA MARA DUSSIN, PHILLIPPE ROSSI, JACQUES CHARVET   +4 more
doaj   +1 more source

Extent of the São Francisco Craton, South America: a mantle perspective

Mineralogy and Petrology
Although cratons owe their longevity to thick, depleted and consequently buoyant sub-continental lithospheric mantle, their extents are commonly indicated by the known distribution of crustal rocks.
Nadine P. Cooper, James M. Scott, D. G. Pearson, R. Azzone, Felipe P. Leitzke, S. Woodland, J. P. Donatti-Filho, M. Palmer, Malcolm R. Reid, Andrew J. Schaeffer   +9 more
semanticscholar   +1 more source

Peixe Zircon as a Quality Control Reference Material in U‐Pb Geochronology by LA‐ICP‐MS

Geostandards and Geoanalytical Research, EarlyView.
Key Points Peixe#0 zircon was characterised for U‐Pb geochronology using CA‐ID‐TIMS, SIMS and a long‐term LA‐ICP‐MS data set. The consistent results establish Peixe#0 as a reference material for U‐Pb quality control. Trace element heterogeneity requires careful, CL‐guided spot selection.
Margareth Sugano Navarro, Erica Martini Tonetto, Elson P. Oliveira, Mauricio Ibañez‐Mejia, Cristina Talavera, Neal J. McNaughton, Jacinta Enzweiler, Michael Wiedenbeck   +7 more
wiley   +1 more source

Insights into the Phanerozoic evolution of the São Francisco Craton based on detrital zircon thermochronology and U-Pb-Hf geochronology

Geological Society of America Bulletin
Basins within cratonic environments offer valuable insights into the fragmentation, dispersion, and agglutination of the lithosphere within supercontinents.
A. Dias, M. Martins-Ferreira, V. Pereira, A. Sales, F. Chemale Jr.   +4 more
semanticscholar   +1 more source

Stratigraphy of the Southern part of the Sergipano Belt, NE Brazil : tectonic implications [PDF]

, 1995
A Faixa Sergipana (NE, Brasil) é uma cunha orogenética de direção geral ESE-WNW e que foi polideformada/metamorfisada em consequencia da colisão entre o Macifo Pernambuco- Alagoas, a norte, e o Cráton de São Francisco, a sul, no Ciclo Brasiliano, há ...
McClay, Kenneth Ray, Silva, Luiz José Homem D´El-Rey   +1 more
core