Characterization and Geological Meaning of the Crystalline Basement Occurrence in the Unaí Region, Minas Gerais State (Central Brasilia Belt) [PDF]
, 2023 Granitoid rocks petrographically and compositionally characterized as tonalite, monzonite granodiorite and granite were observed in restricted areas in the central portion of the external zone of the Brasilia Belt.
Campos, José Eloi Guimarães +1 more
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ナイジェリアに分布するサハラ縦断造山帯の岩石学および変成温度圧力経路 [PDF]
, 2018 筑波大学 (University of Tsukuba ...
Ugwuonah Emmanuel Nwachukwu
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Petrografia e geoquímica de gnaisses da região de Indiara, porção central do arco magmático de Goiás [PDF]
, 2017 In the region of Indiara, Goiás, there is an extensive belt of gneisses related to the Goiás Magmatic Arc, near the contact with the supracrustal rocks of the Anicuns-Itaberaí Metavolcanosedimentary Sequence.
Conceição, Fabiano Tomazini da +4 more
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Geochimica Brasiliensis, 2014 The Bois River Headwaters Suite of, Rosa Mara-Nova Iguaçu (Goiás, Brazil) region, are granitoids to granodioritic and tonalitic with peraluminous characteristics, as distinguished granodiorite VI, granodiorite MU and tonalite SJ, which host gold ...
Said Abdallah
doaj
Nature and evolution of paleoproterozoic Sn and rare metal albitites from Central Brazil : constraints based on textural, geochemical, Ar-Ar, and oxygen isotopes [PDF]
, 2018 Economic and subeconomic concentrations of Sn, In, rare earth elements (REE), Ta, and Nb are known in Central Brazil, in the Goias Tin Province. The Sn-P enriched albitites studied in this paper occur in sharp contact with peraluminous granites of the ...
Botelho, Nilson Francisquini +3 more
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U-Pb SHRIMP and Sm-Nd geochronology of the Silvânia Volcanics and Jurubatuba Granite: juvenile Paleoproterozoic crust in the basement of the Neoproterozoic Brasília Belt, Goiás, central Brazil [PDF]
, 2001 U-Pb SHRIMP and Sm-Nd isotopic ages were determined for felsic metavolcanic rocks from the Silvânia Sequence and Jurubatuba Granite in the central part of the Brasília Belt.
ARMSTRONG, RICHARD +3 more
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The Gondwana-South America Iapetus margin evolution as recorded by Lower Paleozoic units of western Precordillera, Argentina: The Bonilla Complex, Uspallata [PDF]
, 2013 Terrane, accreted to Gondwana South America during Ordovician times. The Bonilla Complex, which represents the southern tip of the Precordillera, is constituted of metasedimentary rocks of internal and external platform environments.
Benedini, Leonardo +2 more
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Gold in sericite-quartz hydrothermalites controled by brasiliano conjugate shear zones in the cavalcante (gq) region, central, Brazil [PDF]
, 1998 In the Cavalcante area, north-northeastern part of the Goiás State, Central Brazil(coordinates 47° 30 - 47° 20 W and 13° 40 -13° 50 S), about eighty lens-shaped bodies of sericite-quartz S-C mylonites have been mapped andmost of them are along dextral ...
Senna Filho, Virdálio +1 more
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Experimental and Thermodynamical Modeling of Ore-Forming Processes in Magmatic and Hydrothermal Systems [PDF]
, 2019 This special issue book includes 10 original research papers that discuss and solve some problems of ore-forming processes in magmatic and hydrothermal systems.
Galina Palyanova (Ed.)
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Closure of the Clymene Ocean and formation of West Gondwana in the Cambrian: Evidence from the Sierras Australes of the southernmost Rio de la Plata craton, Argentina [PDF]
, 2012 The formation of Gondwana took place across a series of Brasiliano?Pan African suture zones that record late Neoproterozoic to earliest Paleozoic collisions between Precambrian cratons. In South America, an internal suture zone marks the disappearance of
Cawood, P. P. +3 more
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