Tectonic evolution of the Brusque Group, Dom Feliciano belt, Santa Catarina, Southern Brazil

Basei, Miguel Ângelo Stipp; Neto, M.C. Campos; Castro, Neivaldo Araújo de; Nutman, Allen P.; Wemmer, Klaus; Yamamoto, Mare; Hueck, Mathias; Osako, Liliana Sayuri; Siga, Oswaldo; Passarelli, Cláudia Regina

doi:10.1016/j.jsames.2011.03.016

Cited by 64 publications

(29 citation statements)

References 53 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%

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%

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

Konopásek

Sláma

Košler

2016

Precambrian Research

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“…In Brazil, Gross et al . [] obtained Sm‐Nd whole rock garnet ages between ~660 and 600 Ma in the Paleoproterozoic basement of the Dom Feliciano Belt, whereas the collisional event in the belt has been placed between approximately 650 and 600 Ma [ Basei et al ., , ; Florisbal et al ., ; Philipp et al ., ].…”

Section: Discussionmentioning

confidence: 97%

Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: Implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano‐Pan‐African Orogeny

et al. 2016

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U‐Pb and Hf zircon (sensitive high‐resolution ion microprobe ‐SHRIMP‐ and laser ablation‐inductively coupled plasma‐mass spectrometry ‐LA‐ICP‐MS‐), Ar/Ar hornblende and muscovite, and Rb‐Sr whole rock‐muscovite isochron data from the mylonites of the Sarandí del Yí Shear Zone, Uruguay, were obtained in order to assess the tectonothermal evolution of this crustal‐scale structure. Integration of these results with available kinematic, structural, and microstructural data of the shear zone as well as with geochronological data from the adjacent blocks allowed to constrain the onset of deformation along the shear zone at 630–625 Ma during the collision of the Nico Pérez Terrane and the Río de la Plata Craton. The shear zone underwent dextral shearing up to 596 Ma under upper to middle amphibolite facies conditions, which was succeeded by sinistral shearing under lower amphibolite to upper greenschist facies conditions until at least 584 Ma. After emplacement of the Cerro Caperuza granite at 570 Ma, the shear zone underwent only cataclastic deformation between the late Ediacaran and the Cambrian. The Sarandí del Yí Shear Zone is thus related to the syncollisional to postcollisional evolution of the amalgamation of the Río de la Plata Craton and the Nico Pérez Terrane. Furthermore, the obtained data reveal that strain partitioning and localization with time, magmatism emplacement, and fluid circulation are key processes affecting the isotopic systems in mylonitic belts, revealing the complexity in assessing the age of deformation of long‐lived shear zones.

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“…The southeast domain corresponds to the Florianópolis Batholith, a multistage collection of plutonic suites associated to strongly reworked gneissic basement (Bitencourt & Nardi, ; Silva et al, ). The central domain consists mainly of the Brusque Group a metavolcano‐sedimentary assemblage, and its crystalline basement, the Camboriú Complex (Basei, Campos Neto, et al, , Basei et al, ; Philipp et al, ). Both units are intruded by voluminous granitic magmatism (e.g., Hueck et al, ).…”

Section: Geological Settingmentioning

confidence: 99%

“…All three domains were juxtaposed in the Neoproterozoic during the assembly of the orogenic belt. Regional metamorphism was accompanied by reworking of the basement inliers in a converging setting between 650 and 620 Ma (Basei, Campos Neto, et al, , Basei et al, ; Chemale et al, ; Hueck et al, ; Philipp et al, ). Most transcurrence within the MGSZ took place between 615 and 585 Ma, coupled to intense granitic magmatism in all domains that extended until ~570 Ma (Florisbal et al, ; Hueck et al, ; Passarelli et al, ).…”

Section: Geological Settingmentioning

confidence: 99%

“…First, initial cooling from middle‐temperature range (e.g., cooling temperatures of K‐Ar system in muscovite) in the region happened between 600 and 500 Ma. Most dated samples are granites dated by U‐Pb predominantly between 625 and 570 Ma (Basei, Campos Neto, et al, ; Chemale et al, ; Florisbal et al, ; Hueck et al, ; Passarelli et al, ), and mica K‐Ar ages spread from 600 to 540 Ma (Passarelli et al, ). Second, deposition of Devonian and Permian sediments of the Paraná Basin may have covered the studied area.…”

Section: Modeling the Thermal Historymentioning

confidence: 99%

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(U‐Th)/He Thermochronology and Zircon Radiation Damage in the South American Passive Margin: Thermal Overprint of the Paraná LIP?

et al. 2018

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New zircon and apatite (U-Th)/He data (AHe and ZHe) from the crystalline basement of the South American passive margin in southern Brazil present a wide distribution of Phanerozoic apparent ages, recording its prerift evolution. Its geological significance can be investigated by modeling the influence of the accumulated radiation damages on the measured crystals in its He ages during a long upper crust residence. Despite the presence of a significant fault in the studied area, the samples essentially constrain a uniform thermal history for the entire study area. Zircon helium ages spread from 472 to 26 Ma and correlate strongly with the radioactive element content of the crystals. Although the region was probably covered by Paleozoic sediments of the Paraná Basin, the ZHe system experienced a more intense thermal overprint, most likely the onset of the Paraná Large Igneous Province (LIP), causing its dispersion. The nearby intrusion of a feeding system of the LIP, the Florianópolis Dyke Swarm, may have contributed for keeping geothermal gradients elevated for a period long enough to promote the observed reset. After the extrusion of the volcanism, the study area was probably covered by up to 2 km of basalt floods, imprinting temperatures above the AHe partial retention zone on the crystalline basement. These were eroded during rapid cooling between 75 and 55 Ma, as indicated by thermal modeling. Additional analyses with Raman spectroscopy were used for calculating radiation damage ages in the zircon crystals measured for (U-Th)/He, resulting in a comparable set of ages.

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Tectonic evolution of the Brusque Group, Dom Feliciano belt, Santa Catarina, Southern Brazil

Cited by 64 publications

References 53 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

Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: Implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano‐Pan‐African Orogeny

(U‐Th)/He Thermochronology and Zircon Radiation Damage in the South American Passive Margin: Thermal Overprint of the Paraná LIP?

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