The Nico Pérez Terrane (Uruguay): From Archean crustal growth and connections with the Congo Craton to late Neoproterozoic accretion to the Río de la Plata Craton

Oriolo, Sebastián; Oyhantçabal, Pedro; Basei, Miguel Ângelo Stipp; Wemmer, Klaus; Siegesmund, Siegfried

doi:10.1016/j.precamres.2016.04.014

Cited by 76 publications

(76 citation statements)

References 75 publications

(142 reference statements)

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“…However, the structure is the result of a complex history of terrane disruptions that began in the Paleoproterozoic. The main Archean-Paleoproterozoic blocks are: (Preciozzi et al 1985, Oriolo et al 2016a; and 3. the southern Villa Serrana block (Bossi & Gaucher 2004; Fig. 2A).…”

Section: Previous Data and Interpretations For The Western Domain Of mentioning

confidence: 99%

“…The Valentines-Rivera complex is constituted by mafic and felsic orthogneisses, yielding multistage magmatic ages of ~ 2.17 -2.11 Ga and reaching granulite facies at ~ 2.08 Ga (Oyhantçabal et al 2012). This block is separated from the Pavas block by the Sierra de Sosa Shear Zone (Preciozzi 1987, Oriolo et al 2016a, 2016cFig. 2B).…”

Section: Different Blocks and Basement Rocksmentioning

confidence: 99%

“…The Pavas block is constituted by amphibolite-facies metamorphic rocks (i.e., the La China complex) made up of mafic orthogneisses with bulk tonalite-trondhjemite-granodiorite (TTG) protolith composition and U-Pb (SHRIMP in zircon) ages between 3.0 and 2.7 Ga (Hartmann et al 2001, Mallmann et al 2007, Gaucher et al 2011, Oyhantçabal et al 2011a, Oriolo et al 2016a). This complex outcrops mainly westward of the Maria Albina Shear Zone (Fig.…”

Section: Different Blocks and Basement Rocksmentioning

confidence: 99%

“…1), has exponentially increased (Hartmann et al 2001, Mallmann et al 2007, Oyhantçabal et al 2009, 2011a, 2011b, Gaucher et al 2011, Aubet et al 2012, Rapalini et al 2015, Peçoits et al 2016, Oriolo et al 2016a, 2016b. A review of the currently available information leads to the conclusion that, although variable, the stratigraphy, the distribution and the age of these units remain ambiguous (Aubet et al 2014).…”

Section: Introductionmentioning

confidence: 99%

“…2.2 -2.0, 1.7 and 0.6 Ga (Saalmann et al 2011, Oriolo et al 2016a, 2016c. Each Archean-Paleoproterozoic block is covered by Meso-to Neoproterozoic successions of the "Schist Belt" (Basei et al 2000).…”

Section: Introductionmentioning

confidence: 99%

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Lithologies, structure and basement-cover relationships in the schist belt of the Dom Feliciano Belt in Uruguay

et al. 2017

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This work is the result of a multiyear effort to use field geology to describe lithologies, to establish contact relationships and to create a sketch of the tectonic evolution of the Meso-to Neoproterozoic metasedimentary successions within the Schist Belt of the Dom Feliciano Belt. This low-grade metamorphic cover rests on the high-grade metamorphic basement of the La China and Las Tetas complexes. This basement is Archean-Paleoproterozoic in age. The Schist Belt is overlapped unconformably by the Barriga Negra formation. The Lavalleja complex and the Barriga Negra formation both deformed together during the D2 deformation event (~ 570 -540 Ma), but the Barriga Negra only partially recorded the D2 transpressive event, whereas the Lavalleja complex was affected by both the D1 tangential event and the D2 event. Event D1 would have developed a fold nappe with vergence to the south. This hypothesis is supported by different structures: (i) recumbent and upright folds oriented E-W, (ii) subhorizontal mylonitic foliation in marbles (calc-schists), (iii) stretching lineations plunging towards the SW in metaconglomerates of the Las Tetas Complex, and (iv) a reworking of the subhorizontal foliation parallel to the Sarandí del Yí strike-slip shear zone.KEYWORDS: Dom Feliciano Belt; Ediacaran; Deformation; Fold nappe; Tectonic evolution. RESUMO: Este trabalho resulta de um esforço de vários anos tentando usar a geologia de campo para descrever litologias, estabelecer relações de contato e perfazer a evolução tectônica das sucessões metassedimentares, de idades meso a neoproterozoicas, que foram deformadas dentro da Faixa de Xistos do Cinturão Dom Feliciano. Essas rochas constituem uma cobertura de baixo grau que repousa em cima do embasamento de alto grau metamórfico dos complexos La China e Las Tetas. Esse embasamento é de idade paleoproterozoica-arqueana. A Faixa de

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Section: Previous Data and Interpretations For The Western Domain Of mentioning

confidence: 99%