Results 31 to 40 of about 42,196 (220)
As sucessões carbonáticas neoproterozóicas do Cráton do São Francisco e os depósitos de fosfato: correlações e fosfogênese [PDF]
, 2007 Neoproterozoic Carbonate Sequences of the São Francisco Craton and the Phosphate Deposits: Correlation and Phosphogenesis. The neoproterozoic carbonate successions of the São Francisco craton are formed by thick carbonate and siliciclastic strata ...
Azmy, Karem +3 more
core +1 more source
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 +3 more
doaj +1 more source
Geosciences = Geociências, 2023 Within the proposal of secular evolution of the Earth system divided into seven phases: “Proto-Earth” (4.57–4.45 Ga); “Primordial Earth” (4.45–3.80 Ga); “Primitive Earth” (3.8–3.2 Ga); “Juvenile Earth” (3.2–2.5 Ga); “Youthful Earth” (2.5–1.8 Ga); “Middle
Alexandre de Oliveira Chaves +3 more
semanticscholar +1 more source
Malignant melanoma of the urethra: a rare histologic subdivision of vulvar cancer with a poor prognosis [PDF]
, 2012 Malignant melanoma of the urethra is a rare tumour that is difficult to diagnose and treat, resulting in a poor prognosis. In this paper, we present the case of a 65-year-old woman who was referred to a gynaecologist because of a urethral mass that ...
Alkatout, Ibrahim +8 more
core +2 more sources
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 +6 more
doaj +1 more source
A Paleoproterozoic intra-arc basin associated with a juvenile source in the Southern Brasilia Orogen : application of U-Pb and Hf-Nd isotopic analyses to provenance studies of complex areas [PDF]
, 2016 A. Westin and M.C. Campos Neto acknowledge support from São Paulo Research Foundation (FAPESP) through grants 2011/13311-9, 2013/13530-8 and 2013/19095-1. A. Westin is a grant holder at FAPESP and M. C. Campos Neto is a CNPq researcher. P. A.
Cawood, Peter Anthony +5 more
core +3 more sources
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 +8 more
doaj +1 more source
Brazilian Journal of Geophysics, 2022 The East Brazilian Shield is a product of the Neoproterozoic convergence and collage of rigid Archean lithospheric blocks, which stabilized at the end of the Paleoproterozoic Trans-Amazonian event (2.0 Ga). The areal extent of the São Francisco Craton
Roberto Gonçalves de Souza Filho +1 more
semanticscholar +1 more source
Comparison of γ-ray spectrometry and ICP-MS methods for measuring radioactive heat-producing elements of rocks: a case study on borehole samples from the Sichuan Basin, China [PDF]
, 2017 We compared the consistency of γ-ray spectrometry and inductively coupled plasma mass spectrometry by analyzing measurement results of the radioactive heat-producing elements U, Th, and K from borehole samples.
Hu, Shengbiao +3 more
core +1 more source
The thin-skinned fold-and-thrust belt of Irecê Basin, São Francisco Craton: main structural setting and physical analog modeling [PDF]
Geologia USP. Série Científica, 2013 Located in the central portion of Bahia state, Irecê Basin displays the best exposures of neoproterozoic sedimentary cover at Northern São Francisco Craton.
Humberto Luis Siqueira Reis +3 more
doaj +1 more source