Buscar
Mostrando ítems 41-50 de 63
Petrological and Sr-Nd evidence bearing on Early Proterozoic magmatic events of the subcontinental mantle: Sao Francisco craton (Uaua, NE-Brazil)
(1995)
Early Proterozoic (2.0–2.4 Ga), unmetamorphosed mafic dykes intrude Archean (3.1–2.7 Ga) terrains of the northern Sao Francisco craton (Uaua, NE-Brazil). The dykes are composed of evolved [atomic Mg/(Mg+Fe2)<0.6] two-pyroxene ...
Petrology and geochemistry of Medicilândia sill, Penatecaua diabase, PAPetrologia e geoquímica da soleira de Medicilândia, diabásio Penatecaua, PA
(Sociedade Brasileira de Geologia, 2012)
Geology and geochemistry of the Reserva sill, Paraná stateGeologia e geoquímica da soleira de Reserva, estado do Paraná
(Sociedade Brasileira de Geologia, 2009)
GEOLOGY AND GEOCHEMISTRY OF METABASIC ROCKS FROM AÇUNGUI SUPERGROUP, NORTH OF QUARENTA OITAVA SHEAR ZONE, SOUTH OF SÃO PAULO STATEGEOLOGIA E GEOQUÍMICA DAS ROCHAS METABÁSICAS DO SUPERGRUPO AÇUNGUI A NORTE DA ZONA DE CISALHAMENTO QUARENTA OITAVA, SUL DO ESTADO DE SÃO PAULO
(Instituto de Geociências e Ciências Exatas, Universidade Estadual Paulista, 2020)
Late Cambrian-Early Ordovician magmatism in the Sierra de Pie de Palo, Sierras Pampeanas (Argentina): Implications for the early evolution of the proto-Andean margin of Gondwana
(Cambridge University Press, 2020-02-18)
The Sierra de Pie de Palo, in the Argentinean Sierras Pampeanas (Andean foreland), consists of a Mesoproterozoic basement and an Ediacaran-upper Cambrian sedimentary cover that underwent folding, thrusting and metamorphism ...
Depletion and refertilization of the Tethyan oceanic upper mantle as revealed by the early Jurassic Refahiye ophiolite, NE Anatolia-Turkey
(Elsevier Science, 2015-02)
We present new whole-rock major and trace element, Re-Os isotope and mineral chemistry data for the upper mantle peridotites and mafic rocks in the Rehafiye ophiolite in NE Anatolia (Turkey), and discuss their significance ...
Caracterización geoquímica y petrografía de los cuerpos intrusivos básicos, aflorantes en la región de cáceres y puerto romero, departamentos de cundinamarca y boyacá, colombia
(Departamento de Geociencias, 2000)
In the Caceres-Puerto Romero area, crop out some basic intrusive bodies shaped like sills and dikes, which are intruding the cretaceous sedimentary rocks of La Paja and Simití formations. In a broad outline, they show ...
Mapeamento Geológico de Detalhe, Litogeoquímica e Geocronologia das Rochas Granulíticas e Gabróicas da Região de Baixão de Ipiúna, Município de Jaguaquara, Bahia, Brasil
(Instituto de GeociênciasGeologiaPGGEOLOGIABrasil, 2017-04-11)
A área de pesquisa está localizada no centro-sul do Estado da Bahia, nordeste do Brasil, inserida no Cráton do São Francisco, fazendo parte da Região Granulítica do Sul da Bahia, onde ocorrem terrenos arqueanos/ ...