An integrated approach to the late stages of Neoproterozoic post-collisional magmatism from Southern Brazil: Structural geology, geochemistry and geochronology of the Corre-mar Granite

Martini, Amós; Bitencourt, Maria de Fátima; Nardi, Lauro Valentim Stoll; Florisbal, Luana Moreira

doi:10.1016/j.precamres.2015.01.011

Cited by 15 publications

(4 citation statements)

References 42 publications

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“…The zircon ages of the older AFMC suite overlap within their respective errors with zircon ages of 625 ± 6 -609 ± 16 Ma known for some intrusions in the Florianópolis Batholith ( Fig. 1), as well as those intruding the foreland exposed to the north of that batholith (Passarelli et al, 2010;Basei et al, 2011;Chemale et al, 2012;Florisbal et al, 2012a;Martini et al, 2015). These authors also reported ages of 602 ± 4 -587 ± 9 Ma for syn-to post-kinematic granitoids in that region, which are apparently older than the younger AFMC suite dated here, but the youngest granitoids overlap within error with samples NJ-05…”

Section: ____________________________________________________________supporting

confidence: 59%

“…Calculation of Nd model ages and Nd (i) values are based on 143 Nd/ 144 Nd = 0.512638 and 147 Sm/ 144 Nd = 0.1967 for the chondritic uniform reservoir (CHUR, Jacobsen and Wasserburg, 1980) and Figure 7. Summary of zircon protolith ages (whiskers show published errors) for the Florianópolis, Pelotas and Aiguá batholiths and intrusions into the neighboring foreland domain (Babinski et al, 1997;Leite et al, 1998;Remus et al, 1999;Koester et al, 2001;da Silva et al, 1999;Hartmann et al, 2002;Gaucher et al, 2008;Oyhantçabal et al, 2009;Passarelli et al, 2010;Basei et al, 2011;Chemale et al, 2012;Florisbal et al, 2012a;Martini et al, 2015), and for the intrusive rocks of the Costal Terrane in the Kaoko Belt (Seth et al, 1998;Kröner et al, 2004;Konopásek et al, 2008). Grey stripes show inferred time interval for the emplacement of the older and younger AFMC suite.…”

Section: ____________________________________________________________mentioning

confidence: 99%

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Linking the basement geology along the Africa-South America coasts in the South Atlantic

Konopásek

Sláma

Košler

2016

Precambrian Research

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The match of geological units of the dissected Kaoko-Dom Feliciano-Gariep orogenic system exposed along the coasts of the South Atlantic is poorly understood. Two suites of intrusive rocks crop out in the Angra Fria Bay area, a part of the Coastal Terrane of the Kaoko Belt in Namibia. U-Pb zircon dating of three samples from the younger suite provided ages of 574 ± 6, 586 ± 3 and 584 ± 7 Ma, similar to the ages of the oldest syn-collisional granitoids in the area. Three samples of the older suite gave ages of 626 ± 5, 622 ± 5 and 620 ± 6 Ma respectively, which have not previously been recorded in intrusive rocks of the Kaoko Belt, but which coincide with those from the Florianópolis Batholith in the Dom Feliciano Belt in Brazil. Zircon ages, Sr-Nd isotopic composition and tectonic position of these granitoids suggest that this magmatic complex could be a continuation of the Florianópolis Batholith on the African side of the Atlantic Ocean. Consequently, the Angra Fria intrusions and the Florianópolis Batholith may represent suitable localities for spatial reconstruction of the Gondwana supercontinent in the area, where the robust pre-Mesozoic connecting points are scarce.

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Section: ____________________________________________________________supporting

confidence: 59%

Section: ____________________________________________________________mentioning

confidence: 99%

Linking the basement geology along the Africa-South America coasts in the South Atlantic

Konopásek

Sláma

Košler

2016

Precambrian Research

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“…600 ± 15 Ma by voluminous granitic magmatism (Florisbal et al 2012a, b;Hueck et al 2016Hueck et al , 2020. Its crystalline basement is exposed in the Camboriú Complex, an association of gneiss-migmatitic rocks and granitic intrusions strongly reworked in the Brasiliano/Pan-African orogenic cycle (Bitencourt and Nardi 2004;Basei et al 2013;Martini et al 2015Martini et al , 2019.…”

Section: Geological Settingmentioning

confidence: 99%

Zircon U-Pb geochronology and Hf isotopes of the Luís Alves Terrane: Archean to Paleoproterozoic evolution and Neoproterozoic overprint

Heller

Hueck

Passarelli

et al. 2021

Journal of South American Earth Sciences

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…Geotectonicamente tanto o Granito Ilha quanto o Granito São Miguel, plotam nos campos de granitos intraplacas e de granitos pós-colisionais o que, em parte, estaria de acordo com Bitencourt & Nardi (2000), Peternell et al (2010), Florisbal et al (2012 e Martini et al (2015), que consideraram que a maior parte das associações graníticas do sul do Brasil foram geradas durante eventos magmáticos relacionados à ambiente pós-colisional (650 -590 Ma). Apesar do caráter fortemente peraluminoso, o Granito São Miguel pode ser enquadrado como um corpo tipo-A, pois muitos granitos desse tipo são peraluminosos (Anderson & Thomas, 1985), apresentam elevadas razões FeO t /(FeO t + MgO), baixo conteúdo de Al 2 O 3 e de CaO, bem como são enriquecidos em Nb, Ta, Zr, ETR e empobrecidos em Cr, Ni, Co, Sr, Ba e Eu.…”

Section: Discussõesunclassified

Geoquímica, Idade U-Pb e Potencial para Mineralizações de Nb-Sn no Granito São Miguel, Biguaçu, Estado de Santa Catarina

et al. 2020

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em relação ao Granito Ilha, e foi subdividido em duas fácies: Biguaçu e Governador Celso Ramos. Rochas das fácies Biguaçu e Governador Celso Ramos apresentam, respectivamente, idades de 651 ± 10 Ma e 645 ± 10 Ma, ambas mais antigas que as do Granito Ilha (595 Ma) e compatíveis com a idade dos corpos das suítes Valsungana / Nova Trento. Rochas das duas fácies do Granito São Miguel são peraluminosas, cálcio-alcalinas de alto K, possuem elevadas razões de FeO t /(FeO t + MgO) e assemelham-se aos granitos tipo-A. A fácies Biguaçu apresenta cassiterita, minerais do subgrupo da columbita e topázio disseminados, bem como exibe conteúdos mais baixos de Y, Ba e Sr e mais elevados de metais raros (Rb, Ga, Hf, Cs, Ta, Nb, Sn) em relação a fácies Governador Celso Ramos. Seu padrão dos elementos terras raras é anômalo e aponta para forte influência pósmagmática. A ausência de greisens associados à fácies Biguaçu pode ser justificada pela erosão da sua zona de cúpula. A preservação da zona de contato entre as rochas da fácies Biguaçu e as rochas encaixantes da Suíte Águas Mornas leva a supor que parte da zona de contato entre a cúpula granítica mineralizada em Nb-Sn se encontra preservada e subjacente às rochas dessa suíte. Com tal, abre-se uma nova perspectiva econômica para a presença de mineralizações primárias na região.

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An integrated approach to the late stages of Neoproterozoic post-collisional magmatism from Southern Brazil: Structural geology, geochemistry and geochronology of the Corre-mar Granite

Cited by 15 publications

References 42 publications

Linking the basement geology along the Africa-South America coasts in the South Atlantic

Linking the basement geology along the Africa-South America coasts in the South Atlantic

Zircon U-Pb geochronology and Hf isotopes of the Luís Alves Terrane: Archean to Paleoproterozoic evolution and Neoproterozoic overprint

Geoquímica, Idade U-Pb e Potencial para Mineralizações de Nb-Sn no Granito São Miguel, Biguaçu, Estado de Santa Catarina

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