Amazonian craton
Repositório Institucional da UFPA: Geology, petrology, U-Pb (shrimp) geochronology of the Morrinhos granite -Paraguá terrane, SW Amazonian craton: implications for the magmatic evolution of the San Ignácio orogeny
... located in the municipality of Vila Bela da Santíssima Trindade of the state of Mato Grosso, Brazil, in the Paraguá Terrane, Rondonian-San Ignácio Province, in the SW portion of the Amazonian Craton. This ...
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The 1590-1520 Ma Cachoeirinha magmatic arc and its tectonic implications for the Mesoproterozoic SW Amazonian craton crustal evolution
... ting of the Cachoeirinha suite, which have important bearing for the understanding of the crustal evolu- tion of the SW Amazonian craton at Mesoprotero- zoic time. U-Pb zircon ages indicate that the Ca- ...
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Geology, petrology and geochronology (Pb-Pb) of the Serra da Bocaina Formation: evidence of an Orosirian Amoguijá Magmatic Arc in the Rio Apa Terrane, south of the Amazonian Craton
... Brittes A.F.N., Plens D.P., Ruiz A.S., Sousa M.Z.A., Batata M.E.F. 2011a. Caracterização estrutural e metamórfica da Formação Serra da Bocaina e do Granito Carandá - Terreno Rio Apa - Sul do Cráton Amazônico - Porto ...
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Field and petrographic data of 1.90 to 1.88 Ga I- and A-type granitoids from the central region of the Amazonian Craton, NE Amazonas State, Brazil
... central Amazonian Craton, Brazil, consists of 1890 to 1898 Ma I-type granitoids (Terra Preta Granite, Água Branca Suite), A-type hornblende-bearing syenogranites (Canoas Syenogranite, Mapuera Suite), felsic ...
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Tectonic evolution of the southern margin of the Amazonian craton in the late Mesoproterozoic based on field relationships and zircon U-Pb geochronology
... and Amazonian craton during the early-middle Mesoproterozoic, the Nova Brasilândia, Aguapeí and Sunsás belts would then reflect zones of intense transpression, within- plate shortening and bimodal ...
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Cerro Porã Batholith: post-orogenic A-type granite from the Amoguijá Magmatic Arc – Rio Apa Terrane – South of the Amazonian Craton
... The Amazonian Craton constitutes the largest Precambrian geotectonic entity of South America and is divided by the Amazonas Syneclise into two shields: Central Brazil and the Guianas ...this craton ...
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Geology and petrology of the Salto do Céu Suite: tectonic and stratigraphic implications on the SW Amazonian Craton
... The mafic sills found in the region of Salto do Céu municipality, state of Mato Grosso, central Brazil, belonging to the Salto do Céu Suite (SCS) are interpreted as a record of the breakup of the Rodinia Supercontinent ...
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Paleoproterozoic (∼1.88Ga) felsic volcanism of the Iricoumé Group in the Pitinga Mining District area, Amazonian Craton, Brazil: insights in ancient volcanic processes from field and petrologic data
... The Iricoumé Group correspond to the most expressive Paleoproterozoic volcanism in the Guyana Shield, Amazo- nian craton. The volcanics are coeval with Mapuera granitoids, and belong to the Uatumã magmatism. They ...
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Repositório Institucional da UFPA: Geology, Geochemistry, and Geochronology (U-Pb) of the Rio Fortuna Gneiss - Serra do Baú Intrusive Suite - Paraguá Terrane - SW Amazonian Craton
... The geological, geochemical, and geochronological data obtained for the Rio Fortuna Gneiss are comparable to those of the Chiquitania Gneiss complex of Litherland et al. (1986) and, more exactly, to those from Unit B ...
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Braz. J. Geol. vol.46 número2
... he rupture time of Columbia is a subject of intense dis- cussion in literature. Some authors suggest that Columbia broke-up soon after its formation, as evidenced by the signif- icant amount of maic dykes dated around ...
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Análise integrada de dados aerogeofísicos e geológicos para caracterização da Faixa Alto Guaporé, porção sudeste de Rondônia
... Using high resolution airborne geophysics integrated with geological, isotopic chemistry and field data improved the geologic interpretation and understanding of the evolution of the SW Amazonian Craton. ...
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MODELOS DE EVOLUÇÃO E COLOCAÇÃO DOS GRANITOS PALEOPROTEROZÓICOS DA SUÍTE JAMON, SE DO CRÁTON AMAZÔNICO
... The generation of the A-type rapakivi granites of the Carajás province is admitted to be linked to asthenosphere upwelling and magma production in the mantle, followed by partial melting of the lower continental crust ...
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Palaeoproterozoic assembly of the São Francisco craton, SE Brazil: New insights from U–Pb titanite and monazite dating
... To better understand the evolution of the São Francisco cratonic lithosphere, it is crucial to constrain the U–Pb titanite/monazite ages of the Archaean crust of the SSFC and compare them with all the available magmatic ...
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A history of the biogeography of Amazonian fishes
... of Amazonian biodiversity unsettled him enough to incite reflections about the patterns of geographical distribution in South American fishes and their underlying causes: “Some- thing is already ...of ...
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In vitro screening of Amazonian plants for hemolytic
... Antiaggregant activity has previously been demonstrated for some known medicinal plants. For example, Bydlowski et al. (1988) demonstrated platelet antiaggregant properties in vivo and in vitro for the whole fruit of the ...
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Litter decomposition and Ectomycorrhiza in Amazonian forests
... Application of a mycosociological method (adaptation of the Lange method) in Central Amazonia produced the following results: In the white-sand podzol campinarana t[r] ...
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U-Pb evidence for Late Neoarchean crustal reworking in the southern São Francisco Craton (Minas Gerais, Brazil)
... Geochronologic summary of the most significant tectonic events that took place in the Southern São Francisco Craton and its southern-southeastern margin. References: 1 – Carneiro (1992); 2 – Endo (1997); 3 – ...
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Mapeamento litológico por correlação entre dados de aeromagnetometria e aerogradiometria gravimétrica 3D-FTG no quadrilátero ferrífero, Minas Gerais, Brasil.
... ALKMIM FF & MARSHAK S. Transamazonian Orogeny in the Southern S˜ao Francisco Craton Region, Minas Gerais, Brazil: evidence for Paleoproterozoic collision and collapse in the Quadril´[r] ...
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Braz. J. Geol. vol.44 número2
... BBB 13-09 was investigated in more detail and shows a relatively large time period from 616 ± 9.2 Ma in the smallest size fraction to 730.6 ± 10.9 Ma in the 2 – 6 µm size fraction. he age of the < 0.2 µm fraction ...
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Braz. J. Geol. vol.47 número2
... From the Statherian to the Cryogenian, the São Francisco‑Congo paleocontinent experienced several rift‑ ing events, recorded by anorogenic magmatic rocks and sedi‑ mentary sequences in the regions of the ...
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