Petrological, geochemical and isotopic data of Neoproterozoic rock units from Uruguay and South Africa: Correlation of basement terranes across the South Atlantic

Will, Thomas M.; Höhn, Stefan; Frimmel, Hartwig E.; Gaucher, Claudio; Roux, Petrus le; Macey, P.H.

doi:10.1016/j.gr.2019.10.012

Cited by 19 publications

(5 citation statements)

References 77 publications

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“…Notably, their data suggest higher temperatures for the peak pressure phase (830-950 C), and lower temperatures for the late decompression phase (600-750 C), but despite this their P-T estimates mostly overlap with those from this study. The data also fit with peak pressure estimates of >10 kbar from Will et al (2020).…”

Section: The Hinterland-cerro Olivo Complexmentioning

confidence: 67%

Garnet growth and mineral geochronology constrains the diachronous Neoproterozoic convergent evolution of the southern Dom Feliciano Belt, Uruguay

Percival

Konopásek

Oyhantçabal

et al. 2023

Journal Metamorphic Geology

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The Dom Feliciano Belt of southern Brazil and Uruguay represents part of a larger Neoproterozoic orogenic system formed during the amalgamation of Western Gondwana. The hinterland and foreland domains in parts of the belt preserve deformation structures and metamorphic assemblages that developed during early crustal thickening from c. 650 Ma. However, the metamorphic history of the southern foreland, in Uruguay, and its relationship with the hinterland, is not so well understood. We show that metamorphism in the southern hinterland is characterized by near-isothermal

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Section: The Hinterland-cerro Olivo Complexmentioning

confidence: 67%

Garnet growth and mineral geochronology constrains the diachronous Neoproterozoic convergent evolution of the southern Dom Feliciano Belt, Uruguay

Percival

Konopásek

Oyhantçabal

et al. 2023

Journal Metamorphic Geology

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“…This lineament marks the border between terranes with a series of differences in the geologic signatures, particularly in the ages of the basement, and the geochemistry and isotopic signatures of the Ediacaran magmatism (Lara et al 2020). As with most of the orogenic belts along the Atlantic margins of South America and Africa, the evolution of the Dom Feliciano Belt has traditionally been interpreted in terms of subduction of oceanic crust and subsequent collision (Basei et al 2000(Basei et al , 2005(Basei et al , 2008(Basei et al , 2018Bitencourt and Nardi 2000;Goscombe and Gray 2008;Konopasek et al 2008;Oyhantçabal et al 2009;Saalmann et al 2011;Frimmel et al 2011;Oriolo et al 2016;Passchier et al 2016;Philipp et al 2016;Goscombe et al 2017a;Arena et al 2016;Frimmel 2018;Hueck et al 2019;Ramos et al 2018Ramos et al , 2020Will et al 2019Will et al , 2020. More recently, however, tectonic models arguing intracontinental processes for the region, challenge the extent and location of the assumed oceanic basins between the different crustal blocks (Konopasek et al 2017(Konopasek et al , 2020Percival et al 2021).…”

Section: Geological Frameworkmentioning

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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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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“…The oldest known rocks in the CDT (Cerro Olivo Complex, are Tonian to Cryogenian, granulite-facies orthogneisses which protholiths intruded a volcanosedimentary succession of probable late Mesoproterozoic age (e.g. Hartmann et al, 2002;Lenz et al, 2011;Konopásek et al, 2018;Will et al, 2019Will et al, , 2020. The 780- Gaucher et al (2009Gaucher et al ( , 2011 proposed that, prior to Tonian rifting, the Kalahari Craton, the RPC (including the NPT) and the basement of the CDT (core of Arachania) formed a coherent crustal unit and were an integral part of Rodinia (e.g.…”

Section: Correlations With the Namaqua-natal Beltmentioning

confidence: 99%

“…Alternatively, the basement of the CDT (Cerro Olivo Complex), which was metamorphosed to granulite-facies conditions during the Brasiliano-Pan African orogeny (e.g. Gross et al, 2009;Masquelin et al, 2012;Will et al, 2020), may represent the arc (Fig. 19B).…”

Section: Correlations With the Namaqua-natal Beltmentioning

confidence: 99%

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The Tapes Complex (Nico Pérez Terrane, Uruguay): Constraining the Mesoproterozoic evolution of the Río de la Plata Craton

Gaucher

Samaniego

Will

et al. 2021

Journal of South American Earth Sciences

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Petrological, geochemical and isotopic data of Neoproterozoic rock units from Uruguay and South Africa: Correlation of basement terranes across the South Atlantic

Cited by 19 publications

References 77 publications

Garnet growth and mineral geochronology constrains the diachronous Neoproterozoic convergent evolution of the southern Dom Feliciano Belt, Uruguay

Garnet growth and mineral geochronology constrains the diachronous Neoproterozoic convergent evolution of the southern Dom Feliciano Belt, Uruguay

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

The Tapes Complex (Nico Pérez Terrane, Uruguay): Constraining the Mesoproterozoic evolution of the Río de la Plata Craton

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