Autochthonous origin of the Encruzilhada Block, Dom Feliciano Belt, southern Brazil, based on aerogeophysics, image analysis and PT-paths

Toni, Giuseppe Betino De; Bitencourt, Maria de Fátima; Konopásek, Jiřı́; Battisti, Matheus Ariel; Costa, Elisa Oliveira da; Savian, Jairo Francisco

doi:10.1016/j.jog.2021.101825

Cited by 16 publications

(12 citation statements)

References 92 publications

(232 reference statements)

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“…Conflicting tectonic interpretations like rifting or a continental arc have been proposed for the Cerro Olivo Complex, mostly based on geochemical characteristics (Basei et al 2010;Masquelin et al 2012;Lenz et al 2012;Koester et al 2016;Konopasek et al 2017;Martil et al 2017;Tambara et al 2019;Will et al 2019;De Toni et al 2021). Though not conclusive, the geochemical compositions show several characteristics suggestive of an arc setting, such as the general tonalitic-granodioritic nature of the rocks, moderate to high Ba, moderate to low Nb, the REE patterns and contents (ΣREE = 186 ppm in average), Ce N (mean = 90), Ce N /Yb N (mean = 9), and La N /Yb N (mean = 11) values, as well as the average slightly negative to negative Eu anomalies indicative of processes of plagioclase fractionation in the source and/or assimilation (i.e.…”

Section: Orthoderived Rocksmentioning

confidence: 99%

“…The Punta del Este Terrane in the southern Brasiliano Dom Feliciano Belt, hosts the record of Tonian tectonomagmatic processes, which have alternatively been interpreted as the result of subduction or continental rifting (e.g. Lenz et al 2011Lenz et al , 2012Masquelin et al 2012;Martil et al 2017;Konopasek et al 2017Konopasek et al , 2020Will et al 2019;De Toni et al 2021). In addition, this South American Terrane, located close to the African Gariep Belt before the opening of the Atlantic Ocean, is a fundamental piece for reconstructing the spatio-temporal relationships between these orogenic belts.…”

Section: Introductionmentioning

confidence: 99%

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Reassessing the polyphase Neoproterozoic evolution of the Punta del Este Terrane, Dom Feliciano Belt, Uruguay

Lara

Siegesmund

Oriolo

et al. 2022

Int J Earth Sci (Geol Rundsch)

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Some recent models challenge the position and extension of the assumed oceanic basins formed through the break-up of Rodinia, and the tectonic processes involved in the Gondwana assembly, making the investigation of the Early Neoproterozoic record of great relevance. Within the South-American Atlantic margin, the Punta del Este Terrane (PET) of the Dom Feliciano Belt (DFB) comprises a unique Tonian to Ediacaran record, and has a strategic position to reconstruct spatio-temporal relationships with the southern African orogenic belts. Novel zircon U–Pb and Lu–Hf data from the PET basement orthogneisses display Tonian magmatic ages (805–760 Ma) and Hf isotopic signatures indicative of mainly crustal/metasedimentary sources, (Nd TDM ages: 2.2–1.9 Ga, and εHf(t): − 12 to − 4). The basement paragneisses yielded late Paleoproterozoic to Neoproterozoic U–Pb ages, but dominantly positive εHf(t) values. The presented results confirm the correlation of the PET with the Coastal Terrane of the Kaoko Belt, and discard the idea of the Nico Pérez Terrane as a source. Detrital zircon U–Pb and Lu–Hf data from the Rocha Formation yielded a main peak at ca. 660 Ma, with the Neoproterozoic grains showing a εHf(t) between + 1 and + 14. The deposition age of the Rocha Formation is constrained by the youngest detrital zircon age peak (660 Ma), and the beginning of the deposition of the Sierra de Aguirre Formation (580 Ma). The data indicate common sources with the Marmora Terrane, and it is thus proposed that the Rocha Formation belongs to the Gariep Belt, and it was juxtaposed during the Ediacaran to the DFB.

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Section: Orthoderived Rocksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reassessing the polyphase Neoproterozoic evolution of the Punta del Este Terrane, Dom Feliciano Belt, Uruguay

Lara

Siegesmund

Oriolo

et al. 2022

Int J Earth Sci (Geol Rundsch)

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“…One of the most accepted ideas concerning the secondary intracontinental amalgamation is that the Dom Feliciano/Kaoko Belt probably ended with an oblique collision and lateral escape or extrusion (Fernandes et al, 1993;Tommasi et al, 1994;De Toni et al, 2021). The Kalahari Craton collision against the 'Rio de la Plata Craton-NPT' assemblage (Philipp et al, 2016) was likely to occur during the last transpression event (Goscombe et al, 2005;Oyhantçabal et al, 2011).…”

Section: Contribution Concerning the "Exotic" Pavas Blockmentioning

confidence: 99%

“…Ambiguity revolves around whether the tectonic events responsible for the updated structural framework reflect intra-plate (intra-cratonic) processes or those linked to and driven by interactions at plate margins (e.g., Clark et al 2007). The primary character of crustal blocks in an orogenic collage must distinguish itself from their late-orogenic secondary framework (Şengör and Dewey, 1990;Fernandes et al, 1995;De Toni et al, 2021). Tectonic models of Precambrian orogens either miss the existence of large brittle faults or mistake them for ductile shear zones.…”

Section: Introductionmentioning

confidence: 99%

The Archean Pavas Block in Uruguay: Extension and tectonic evolution based on LA-ICP-MS U–Pb ages and airborne geophysics

Masquelin

Aı̈fa

Scaglia

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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“…= Kalahari. (b) Simplified geological map of the southern SANOS (based on Bitencourt & Nardi, 2000; De Toni et al., 2021; Konopásek et al., 2017; McCourt et al., 2013; Oyhantçabal, Siegesmund, & Wemmer, 2011), showing the position of the African and South American continents at the onset of the opening of the South Atlantic Ocean (after Heine et al., 2013). LA = Luis Alves Craton; NP = Nico Pérez Terrane; RDLP = Rio de la Plata Craton; SBSB = Southern Brazilian Shear Belt; DFB = Dom Feliciano Belt.…”

Section: Introductionmentioning

confidence: 99%

Tectono‐Metamorphic Evolution of the Northern Dom Feliciano Belt Foreland, Santa Catarina, Brazil: Implications for Models of Subduction‐Driven Orogenesis

et al. 2022

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Orogenic systems vary widely in terms of their geometry, duration, and scale. The classic collisional orogen can be described using models that involve the termination of a Wilson cycle, where the opening and closing of a large ocean basin between continental bodies culminates in the continental collision. Accretionary orogens, in contrast, form at continental-oceanic convergent plate boundaries in the absence of continental collision, and develop during continuous subduction by crustal thickening due to short-term coupling across the subduction plate boundary (Cawood et al., 2009). Within-plate deformation can also occur away from plate margins, triggered by the transmission of stress from active plate boundaries through the lithosphere (Aitken et al., 2013;Raimondo et al., 2014). Large-scale intracontinental orogens are comparatively less common than collisional or accretionary orogens, but examples are recognized in both ancient and modern settings (Cunningham, 2005;Faure et al., 2009;Hand & Sandiford, 1999). Although the defining characteristics of collisional, accretionary, and intracontinental orogens make them distinct, Cawood et al. (2009) proposed that they represent three interrelated endmembers between which lies a wide spectrum of orogen types. Thus, continental collision at the termination of a Wilson cycle is genetically linked to preceding accretionary orogeny. Similarly, tectonic switching during accretionary orogeny can produce large-scale crustal thickening in within-plate settings (Lister & Forster, 2009), resulting in orogens that develop as the consequence of intracratonic rift inversion, similar to what occurs within an accretionary back-arc setting but at a distance from the developing arc (Collins, 2002;Thompson et al., 2001).The South Atlantic Neoproterozoic Orogenic System (SANOS, sensu Konopásek et al., 2020) comprises an extensive system of orogenic belts that formed during the late Neoproterozoic amalgamation of Western Gondwana

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Autochthonous origin of the Encruzilhada Block, Dom Feliciano Belt, southern Brazil, based on aerogeophysics, image analysis and PT-paths

Cited by 16 publications

References 92 publications

Reassessing the polyphase Neoproterozoic evolution of the Punta del Este Terrane, Dom Feliciano Belt, Uruguay

Reassessing the polyphase Neoproterozoic evolution of the Punta del Este Terrane, Dom Feliciano Belt, Uruguay

The Archean Pavas Block in Uruguay: Extension and tectonic evolution based on LA-ICP-MS U–Pb ages and airborne geophysics

Tectono‐Metamorphic Evolution of the Northern Dom Feliciano Belt Foreland, Santa Catarina, Brazil: Implications for Models of Subduction‐Driven Orogenesis

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