Proterozoic to Ordovician geology and tectonic evolution of Rio de Janeiro State, SE-Brazil: insights on the central Ribeira Orogen from the new 1:400,000 scale geologic map

Heilbron, Mônica; Silva, Luiz Guilherme do Eirado; Almeida, Júlio; Tupinambá, Miguel; Peixoto, Caroline; Valeriano, Cláudio de Morisson; Lobato, Marcela; Rodrigues, Sérgio Wilians de Oliveira; Ragatky, Célia Diana; Silva, Márcio Antonio; Monteiro, Thaís; Freitas, Natália Cota de; Miguens, Davi Schulman; Girão, Raphael e Silva

doi:10.1590/2317-4889202020190099

Cited by 28 publications

(41 citation statements)

References 48 publications

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“…Based on the study of metabasic and metapelitic rocks of the São Fidélis Group (Costeiro Domain, Oriental Terrane), Santos et al (2005) determined a P-T metamorphic history with peak conditions ranging in the interval of 750 -800 ° C and 8-9 kbar. They have interpreted it as an early M 1 event, possibly equivalent to the M 0 event of Duarte et al (2012) (Heilbron et al, 2020), which obtained significantly lower values for both temperature and pressure (600-700 °C and 5 to 6.5 kbar).…”

Section: Introductionmentioning

confidence: 87%

“…This orogen comprises four tectonostratigraphic terranes imbricated from SSE to NWW toward the São Francisco Craton (Heilbron et al, 2004): Occidental Terrane, Central Superterrane (now inclunding Cambuci Domain, Paraiba do Sul and Embu terranes - Heilbron et al, 2020) Oriental Terrane and Cabo Frio Terrane; the last one amalgamated at 520 Ma. The study area is located in the contact between the Central Superterrane and Oriental Terrane and includes the following domains which is structured, from bottom to top as: a) the Cambuci Domain of the Central Superterrane; b) the Costeiro Domain, which includes the Rio Negro Magmatic Arc -790-610 Ma (Tupinambá et al, 1998); and c) the Italva Domain with the Serra da Prata Arc (ca.…”

Section: Geological Settingmentioning

confidence: 99%

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Contrasting P-T conditions of Oriental Terrane and Central Superterrane (Ribeira Belt), NW of Rio de Janeiro state, Brazil

et al. 2021

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Neoproterozoic-Cambrian rocks from the Oriental Terrane and the Central Superterrane of the Ribeira Belt occur in northwest of Rio de Janeiro state. This paper presents new data on field research, petrology, mineral chemistry and conventional geothermobarometry, fundamental to understanding the geology of the region. The metabasic rocks from the Cambuci Domain are associated with the Central Superterrane retroarc basin and record two metamorphic events: M 0 (before the formation of the main foliation, under conditions of 788 °C) and M 1 (contemporary to the main foliation, with peak at 718-752 ºC and 6.62 kbar). The rocks from the Costeiro Domain, interpreted as the Rio Doce arc (Angelim Suite) and the retroarc basin (São Fidélis Goup) of the Oriental Terrane record a metamorphic peak at granulite facies yielding the highest pressure and temperature among the studied domains (752-784 °C and 8.2-9 kbar). The Italva Domain amphibolites represents the retroarc basin of the Oriental Terrane. Temperature and pressure values obtained for the Italva Domain metamorphic peak record 731 ºC and 6.78 kbar, respectively, in the transition zone between upper amphibolite and granulite facies conditions. This work presents the newest record of metamorphic evolution for the Oriental Terrane of the Ribeira Belt, suggesting an anticlockwise P-T-t path and near-isobaric cooling (IBC) for the rocks of the Cambuci Domain. Therefore, these results contribute to the understanding of the evolution of orogenic belts during the amalgamation of the Gondwana in the Neoproterozoic.

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Section: Introductionmentioning

confidence: 87%

Section: Geological Settingmentioning

confidence: 99%

Contrasting P-T conditions of Oriental Terrane and Central Superterrane (Ribeira Belt), NW of Rio de Janeiro state, Brazil

et al. 2021

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“…This process that involved subduction, collision, and the collapse of the orogen, between 790 Ma and 480 Ma (Tupinambá et al, 2012;Heilbron et al, 2016;Schmitt et al, 2018), is considered one of the most comprehensive examples of the Precambrian diachronic orogenic history (Heilbron et al, 2020). During these continental colli- sion events, migmatites, ortho and paragneisses, and granitic rocks were formed, including those that are found in the coastal area of Rio de Janeiro.…”

Section: Geological Frameworkmentioning

confidence: 99%

A heritage stone of Rio de Janeiro (Brazil): the Facoidal gneiss

et al. 2021

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This paper presents the Facoidal gneiss, the most significant and characteristic natural and heritage stone of Rio de Janeiro, Brazil, also known as 'the most carioca of rocks. ' The metropolis that is a World Heritage Cultural Landscape was built on, over, around, and with local stones, mostly Neoproterozoic gneisses. Among them, Facoidal gneiss occurs both sides of the Guanabara Bay, shaping its natural monuments as the Corcovado and the Sugar Loaf. It is composed of K-feldspar megacrysts usually deformed, looking like eyes (augen), arranged in a quartzfeldspar and biotite rich matrix. Its colour varies from pink to greyish. This stone was substantially used as a building material in many heritage monuments and buildings, in frames of windows and doors in houses, in sidewalks and public infrastructures. The aggressive environment of Rio de Janeiro, a tropical coastal megalopolis, is reflected in decay patterns such as loss of matrix and spalling. There are no quarries in production as this rock outcrops stand inside nature conservation or urbanized areas. The current impossibility of extracting replacement material justifies calling attention to this stone for the better conservation of Rio de Janeiro's built heritage.

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“…This metamorphic event was broadly coeval with the magmatic crystallization. The second event is related to the Brasiliano Orogeny, whose collisional episodes led to the amalgamation of different tectono-stratigraphic terranes that progressively collided against the southeastern margin of São Francisco Craton (SFC) between the Early Ediacaran and the Cambrian (Heilbron et al 2000(Heilbron et al , 2004(Heilbron et al , 2008(Heilbron et al , 2020Trouw et al, 2000;Schmitt et al 2004Schmitt et al , 2008Schmitt et al , 2016Freitas et al 2021), where the regional foliation generated is evidenced by the crystallization of hornblende, biotite and garnet and locally orthopyroxene and clinopyroxene.…”

Section: Introductionmentioning

confidence: 99%

The Serra do Caparaó Complex, Mantiqueira Province, Brazil, revisited: metamorphic age constraints by U-Pb and Lu-Hf method in zircon by LA-ICP-MS

Faria¹,

Alves²,

Potratz³

et al. 2022

JGSB

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The U-Pb method was used in order to understand the high-grade metamorphic rocks in the Ribeira Belt (SE Brazil) and Lu-Hf isotopes were applied to investigate the magmatic photolith sources and the tectonic setting of Serra do Caparaó Complex rocks. The results indicate the existence of two thermal events: the first related to a Paleoproterozoic magmatic event and the second one linked to high-grade metamorphism related to the Brasiliano Orogeny. The U-Pb age interval from 2209 to 2060 Ma obtained in zircon grains from the granulitic orthogneiss with TDMcrustal ages ranging from 2.13 to 3.87 Ga may be interpreted as mantle-derived source with important older crust participation in the magma formation; juvenile arc-related rocks were generated at this time as indicated by the positive ƐHf values. The second group of U-Pb ages ranging from 633 to 584 Ma is interpreted as a metamorphic event, resulting from the collisional process related to the Gondwana assembly.

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Proterozoic to Ordovician geology and tectonic evolution of Rio de Janeiro State, SE-Brazil: insights on the central Ribeira Orogen from the new 1:400,000 scale geologic map

Cited by 28 publications

References 48 publications

Contrasting P-T conditions of Oriental Terrane and Central Superterrane (Ribeira Belt), NW of Rio de Janeiro state, Brazil

Contrasting P-T conditions of Oriental Terrane and Central Superterrane (Ribeira Belt), NW of Rio de Janeiro state, Brazil

A heritage stone of Rio de Janeiro (Brazil): the Facoidal gneiss

The Serra do Caparaó Complex, Mantiqueira Province, Brazil, revisited: metamorphic age constraints by U-Pb and Lu-Hf method in zircon by LA-ICP-MS

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