Archean to early Neoproterozoic crustal growth of the southern South American Platform and its wide-reaching “African” origins

Hueck, Mathias; Oriolo, Sebastián; Basei, Miguel Ângelo Stipp; Oyhantçabal, Pedro; Heller, Beatrix; Wemmer, Klaus; Siegesmund, Siegfried

doi:10.1016/j.precamres.2021.106532

Cited by 21 publications

(13 citation statements)

References 241 publications

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“…The geochemical characteristics of the orthogneisses, mainly arc-like, but with some extension characteristics as pointed out by Konopásek et al (2017), could be explained by this setting. Results also indicate an important component of contamination related to the sediment assimilation, which may result from the mixing of these older crustal sources, with Tonian juvenile inputs, as proposed by Hueck et al (2022).…”

Section: Relationship Between Ortho-and Paragneisses and Tectonic Imp...mentioning

confidence: 55%

“…12, 13). This crustal signature has been previously interpreted as related to the assimilation/recycling of a Paleoproterozoic-Archean basement (Koester et al 2016;Martil et al 2017;Petrolli 2017;Hueck et al 2022), but also due to the assimilation of sediments/supracrustal rocks (Will et al 2019). Since there is no clear pre-Tonian basement related to the Cerro Olivo Complex, the participation of a non-outcropping or completely reworked basement is hard to explain but cannot be ruled out.…”

Section: Orthoderived Rocksmentioning

confidence: 95%

“…Konopasek et al (2014Konopasek et al ( , 2017 Afterwards, further magmatism took place in the new active margin up to 720 Ma (e.g. Phillip et al 2016Phillip et al , 2020Hueck et al 2022). Magmatism with post-collisional characteristics is found in both terranes from ca.…”

Section: Relationship Between Ortho-and Paragneisses and Tectonic Imp...mentioning

confidence: 97%

“…Oriolo et al 2016;Masquelin et al 2017;Oyhantçabal et al 2018), being interpreted as a marginal piece of the Congo Craton during the Neoproterozoic (e.g. Oyhantçabal et al 2011Oyhantçabal et al , 2018Rapela et al 2011;Oriolo et al 2016;Percival et al 2021;Hueck et al 2022).…”

Section: Geological Frameworkmentioning

confidence: 99%

“…17), which is characterized by Tonian magmatism dominated by juvenile mantle-derived contributions in an arc setting (e.g. Philipp et al 2018;Hueck et al 2022). An early subduction over the border of the Congo Craton, represented by the Punta del Este and Coastal Terrane might have resulted in localized crustal extension in the arc and back-arc domains, recorded within minor crustal fragments represented by the basement inliers of the Dom Feliciano Belt (Figs.…”

Section: Relationship Between Ortho-and Paragneisses and Tectonic Imp...mentioning

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: Relationship Between Ortho-and Paragneisses and Tectonic Imp...mentioning

confidence: 55%

Section: Orthoderived Rocksmentioning

confidence: 95%

Section: Relationship Between Ortho-and Paragneisses and Tectonic Imp...mentioning

confidence: 97%

Section: Geological Frameworkmentioning

confidence: 99%

Section: Relationship Between Ortho-and Paragneisses and Tectonic Imp...mentioning

confidence: 99%

See 3 more Smart Citations

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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Petrochronology of the Dom Feliciano Belt foreland in southernmost Brazil reveals two distinct tectonometamorphic events in the western central Kaoko–Dom Feliciano–Gariep orogen

Battisti,

Konopásek,

Bitencourt

et al. 2024

Int J Earth Sci (Geol Rundsch)

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Deciphering the parent-daughter relationship between Ediacaran high-silica ignimbrites and their complementary silicic cumulates: Insights from zircon trace element composition

et al. 2023

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Archean to early Neoproterozoic crustal growth of the southern South American Platform and its wide-reaching “African” origins

Cited by 21 publications

References 241 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

Petrochronology of the Dom Feliciano Belt foreland in southernmost Brazil reveals two distinct tectonometamorphic events in the western central Kaoko–Dom Feliciano–Gariep orogen

Deciphering the parent-daughter relationship between Ediacaran high-silica ignimbrites and their complementary silicic cumulates: Insights from zircon trace element composition

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