Contribution of Sm-Nd and Rb-Sr isotope systems to the petrogenetic study of the peraluminous two-mica granite pluton in Oporto town (NW Portugal) [PDF]
, 2014 O Granito do Porto corresponde a um granito hercínico, leucocrata, de duas micas, fortemente peraluminoso. No presente trabalho foram realizadas análises para os sistemas isotópicos Rb-Sr e Sm-Nd, em cinco amostras frescas do granito em estudo ...
Almeida, A., Noronha, F., Santos, J. F.
core
Contrasting crustal sources for peraluminous granites of the segmented Montes de Toledo Batholith (Iberian Variscan Belt) [PDF]
, 2008 The Variscan Montes de Toledo Batholith (MTB) is an E–W linear array of peraluminous granite plutons which is chemically segmented. The study is focused on the western segment of the MTB (W-MTB), mainly composed of granites with slightly lower CaO and ...
Billstrom, Kjell +5 more
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Revisão estratigráfica das unidades superiores da faixa paraguai norte : litoestratigrafia, quimioestratigrafia (C e Sr) e geocronologia (U-Pb). Mato Grosso, Brasil [PDF]
, 2019 Dissertação (mestrado)—Universidade de Brasília, Instituto de Geociências, Pós-Graduação em Geologia, 2015. ; A Faixa Paraguai contém registros dos eventos glaciais globais Neoproterozóicos, incluindo sedimentação que avançou até o limite Neoproterozóico-Cambriano Inferior.
openaire +2 more sources
New U-Pb SHRIMP zircon ages for pre-variscan orthogneisses from Portugal and their bearing on the evolution of the Ossa-morena tectonic zone [PDF]
, 2006 New SHRIMP U-Pb zircon ages for the Portalegre and Alcáçovas orthogneisses document a complex pre-Variscan history for the Iberian basement in Portugal. The available geochemical and geochronological data for the Alcáçovas orthogneiss (ca.
Andrade, A. S. +6 more
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Mantle-like Sr-Nd isotope composition of Fe-K subalkaline granites : the Peneda-Gerês Variscan massif (NW Iberian Peninsula) [PDF]
, 2004 The Peneda-Gerês massif is one of the most representative NW Iberian late- to post-orogenic Variscan granitic plutons. It resulted essentially from the subsynchronous emplacement, at 290-296 Ma, of two granitic magmas of Fe-K subalkaline affinity, with ...
Bard +39 more
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Características isotópicas Sr-Nd do Granito do Pedregal e rochas migmatíticas associadas [PDF]
, 2015 Neste trabalho são apresentados os resultados isotópicos Sr-Nd do Granito do Pedregal e das rochas gnaissomigmatíticas associadas, aflorantes na Zona Centro-Ibérica noroeste de Portugal, no bordo oriental do maciço granítico sin-orogénico do Porto.
Ferreira, J. A. +3 more
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Tectonostratigraphy of Middle and Upper Palaeozoic black shales from the Porto-Tomar-Ferreira do Alentejo shear zone (W Portugal): new perspectives on the Iberian Massif [PDF]
, 2003 Middle/late Devonian and early Carboniferous metasedimentary sequences in the northernmost region (Porto-Espinho-Tomar) of the Ossa-Morena Zone (Portuguese Iberian Variscan Massif) contain black shales of very low to low-grade metamorphism.
Andrade, A. A. Soares de +10 more
core +1 more source
U-Pb dating and geochemical dataset of fracture-filling calcite veins from the Bóixols-Sant Corneli anticline (Southern Pyrenees). [PDF]
Data Brief, 2022 Muñoz-López D +10 more
europepmc +1 more source
Rare earth element and yttrium geochemistry applied to the genetic study of cryolite ore at the Pitinga Mine (Amazon, Brazil) [PDF]
, 2008 This work aims at the geochemical study of Pitinga cryolite mineralization through REE and Y analyses in disseminated and massive cryolite ore deposits, as well as in fluorite occurrences.
Andrade, Sandra +5 more
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