Multi-stage crustal accretion by magmatic flare-up and quiescence intervals in the western margin of the São Francisco Craton: U-Pb-Hf and geochemical constraints from the Almas Terrane

Martins-Ferreira, Marco Antônio Caçador; Dias, Airton Natanael Coelho; Chemale, Farid; Campos, José Elói Guimarães; Seraine, Marina; Novais-Rodrigues, Eduardo

doi:10.1016/j.gr.2020.04.005

Cited by 24 publications

(3 citation statements)

References 58 publications

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“…On the other hand, the inherited metamorphic grade and the restrained setting of the Las Tetas Complex compared with those of Neoproterozoic units led to questions about the "suspected" provenance of the Pavas Block. This block could be first a Paleoproterozoic terrane displaced during the Rhyacian accretion within the Columbia Paleo-continent, like many others around the São Francisco Craton (e.g., Ávila et al, 2010;Martins-Ferreira et al, 2020) before becoming "Brasiliano".…”

Section: Contribution Concerning the "Exotic" Pavas Blockmentioning

confidence: 96%

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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Section: Contribution Concerning the "Exotic" Pavas Blockmentioning

confidence: 96%

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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“…3.64–3.00 Ga in both the cratonic area 32 , 33 and in the reworked basement of the Borborema/NW Africa 34 – 38 , Tocantins 39 and Mantiqueira/SW Africa 40 , 41 provinces. Major 2.7–2.5 Ga greenstone belts and plutonic rocks surrounding, intruding and reworking the Archean seed nuclei, formerly known as “Jequié” or Rio das Velhas cycle in the cratonic area 33 , 42 , also recognized in the Borborema/NW Africa 35 , 43 – 46 , Tocantins 47 and in the Mantiqueira/SW Africa 40 , 41 provinces. The occurrence of Siderian-Rhyacian basins (ca.…”

Section: Putative “Ariadne’s Threads” For the Reconstruction Of The C...mentioning

confidence: 99%

“…Major 2.7–2.5 Ga greenstone belts and plutonic rocks surrounding, intruding and reworking the Archean seed nuclei, formerly known as “Jequié” or Rio das Velhas cycle in the cratonic area 33 , 42 , also recognized in the Borborema/NW Africa 35 , 43 – 46 , Tocantins 47 and in the Mantiqueira/SW Africa 40 , 41 provinces.…”

Section: Putative “Ariadne’s Threads” For the Reconstruction Of The C...mentioning

confidence: 99%

The role of V-shaped oceans and ribbon continents in the Brasiliano/PanAfrican assembly of western Gondwana

Caxito

Alkmim

2023

Sci Rep

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Western Gondwana amalgamated by collision of continental blocks that did not form prior conjugated margins (extroversion), and by typical Wilson cycles, when continental blocks that rifted away giving birth to new oceans were subsequently re-joined in approximately the same position (introversion). The introverted systems are characterized by the opening of V-shaped basins through rifting and hyperextension of various continental pieces (micro- and ribbon continents) from a former Central African Block. These continental fragments lost substantial parts of their mantle lithosphere and became decratonized while drifting towards the external Goiás-Pharusian ocean. Protracted seafloor spreading and consumption through subduction of the internal and external oceans, respectively, ultimately led to multiple, diachronous collisions with other continental blocks detached from Rodinia (Amazonian, West Africa, Embu, etc.). These collisions pushed the ribbon continents back and closed the introverted basins, squeezing and incorporating the reworked basement tracts between the main colliding blocks and the rigid remainder of the Central African Block (the São Francisco-Congo craton). Continental extrusion and lateral escape tectonics ensued, generating thousands-of-km long networks of anastomosing directional shear zones (keirogens), as a consequence of both the accretionary systems developed between the involved blocks and the highly deformable nature of the decratonized ribbon continents.

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Intracontinental uplift of the Brazilian Central Plateau linked to continental breakup, orogenies, and basin filling, supported by apatite and zircon fission-track data

et al. 2020

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Multi-stage crustal accretion by magmatic flare-up and quiescence intervals in the western margin of the São Francisco Craton: U-Pb-Hf and geochemical constraints from the Almas Terrane

Cited by 24 publications

References 58 publications

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

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

The role of V-shaped oceans and ribbon continents in the Brasiliano/PanAfrican assembly of western Gondwana

Intracontinental uplift of the Brazilian Central Plateau linked to continental breakup, orogenies, and basin filling, supported by apatite and zircon fission-track data

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