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Mostrando ítems 51-60 de 105
Mesoproterozoic and Paleoproterozoic subcontinental lithospheric mantle domains beneath southern Patagonia: Isotopic evidence for its connection to Africa and Antarctica
(Geological Society of America, 2015-01)
New isotopic studies on mantle xenoliths from Santa Cruz Province, southern Patagonia, Argentina, reveal that at least three discrete subcontinental lithospheric mantle (SCLM) domains—the Deseado Massif, Tres Lagos, and ...
The great Precambrian collision of the Southeastern Brazil and the regional structureA GRANDE COLISÃO PRÉ-CAMBRIANA DO SUDESTE BRASILEIRO E A ESTRUTURAÇÃO REGIONAL
(Instituto de Geociências e Ciências Exatas, Universidade Estadual Paulista, 2010)
Geologia, contexto Geotectônico e Potencial Metalogenético para depósitos de Ni-Cu- (EGP) do Complexo máfico-ultramáfico de Brejo Seco, Faixa Riacho do Pontal, Sudeste do Piauí
(Universidade Federal de Minas GeraisUFMG, 2014-07-30)
The Mafic-Ultramafic Brejo Seco Complex occurs on the western end of the Neoproterozoic Riacho do Pontal fold belt, the northern limit of the São Francisco Craton, State of Piaui, Northeast of Brazil. In this work, ...
Mesoproterozoic rapakivi granites of the Rondonia Tin Province, southwestern border of the Amazonian craton, Brazil - I. Reconnaissance U-Pb geochronology and regional implications
(Elsevier B.V., 1999-04-30)
Rapakivi granites and associated mafic and ultramafic rocks in the Rondonia Tin Province, southwestern Amazonian craton, Brazil were emplaced during six discrete episodes of magmatism between ca 1600 and 970 Ma. The seven ...
From source-to-sink: The Late Permian SW Gondwana paleogeography and sedimentary dispersion unraveled by a multi-proxy analysis
(Elsevier B.V., 2016-10-01)
The Late Permian sedimentary succession of the Parana Basin, southern Brazil, provide a valuable source of information about sediment provenance, tectonic processes and, consequently, the paleogeography of the southwestern ...
Basement evolution of the Sierra de la Ventana Fold Belt: New evidence for Cambrian continental rifting along the southern margin of Gondwana
(Geological Society Publications House, 2003-07)
U-Pb sensitive high-resolution ion microprobe data together with geochemical and Nd isotope analyses obtained in the basement complex of the Sierra de la Ventana Fold Belt indicate that the Early Palaeozoic passive margin ...
Gondwana Geodiversity and Geological Heritage: Examples from the North Coast of São Paulo State, BrazilGeodiversidade do Gondwana e patrimônio geológico: exemplos da costa Norte do Estado de São Paulo, SP
(Centro de Ciências Matemáticas e da Natureza, Instituto de Geociências, Universidade Feder, 2012)
A cambrian mixed carbonate–siliciclastic platform in SW Gondwana: Evidence from the Western Sierras Pampeanas (Argentina) and implications for the early Paleozoic paleogeography of the proto-Andean margin
(Springer, 2018-10)
The Western Sierras Pampeanas (WSP) of Argentina record a protracted geological history from the Mesoproterozoic assembly of the Rodinia supercontinent to the early Paleozoic tectonic evolution of SW Gondwana. Two well-known ...