Geochemistry and U–Pb zircon ages of plutonic rocks from the Algodões granite-greenstone terrane, Troia Massif, northern Borborema Province, Brazil: Implications for Paleoproterozoic subduction-accretion processes

Costa, Felipe Grandjean da; Palheta, Edney Smith de Moraes; Rodrigues, Joseneusa Brilhante; Gomes, Iaponira Paiva; Vasconcelos, Antônio Maurílio

doi:10.1016/j.jsames.2015.01.007

Cited by 36 publications

(28 citation statements)

References 113 publications

(178 reference statements)

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“…The province comprises domains of highly deformed Paleoproterozoic rocks and locally includes Archean fragments (Costa et al, ; Dantas et al, ; Santos et al, ; Van Schmus et al, ), which are alternating with metamorphosed Neoproterozoic volcano‐sedimentary belts (Hollanda et al, ; Van Schmus et al, ) and Tonian to Ediacaran continental crust containing mainly granitic components (Araujo et al, ; Brito Neves et al, ; Santos et al, ; Santos & Medeiros, ). The province is divided into Northern, Transversal and Southern Sub‐provinces (Van Schmus et al, , ), which record the polycyclic Neoproterozoic history of accretion‐ and collision‐related events, resulting in a complex mosaic of tectonostratigraphic terranes.…”

Section: Geological Settingmentioning

confidence: 99%

Accretion Tectonics in Western Gondwana Deduced From Sm‐Nd Isotope Mapping of Terranes in the Borborema Province, NE Brazil

et al. 2018

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Section: Geological Settingmentioning

confidence: 99%

Accretion Tectonics in Western Gondwana Deduced From Sm‐Nd Isotope Mapping of Terranes in the Borborema Province, NE Brazil

et al. 2018

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“…This domain is characterized by high to medium‐ T metamorphism and migmatisation, abundant syntectonic to late‐tectonic granitoid plutons and a network of anastomosing strike‐slip shear zones (Vauchez et al, ). In addition to a few Archean cratonic nuclei most of the basement of the BP is composed of Rhyacian to Orosirian granite‐gneiss and greenstone sequences related to the Transamazonian orogeny and of Neoproterozoic orogenic belts (Costa et al, ). The major shear zones have been interpreted to separate different tectonic domains, the CCD being limited to the southeast by the Senador Pompeu shear zone and to the northwest by the Transbrasiliano lineament.…”

Section: Geological Settingmentioning

confidence: 99%

Zippered Shear Zone Model for Interacting Shear Zones in the Borborema Province, Brazil, as Constrained by U‐Pb Dating

et al. 2019

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Shear zones typically interact to form connected systems or networks to accommodate crustal deformation, but our knowledge of how this happens is fragmentary. Understanding branching and interacting shear zones requires knowledge of timing, deformation kinematics, and rheology. The Senador Pompeu, Tauá, and Cococi strike‐slip shear zones of the Borborema Province (NE Brazil) have a central role and location in the Neoproterozoic assembly of Gondwana and provide a means to understand shear zone interaction. We apply (i) U‐Pb in situ SHRIMP analysis of zircons from syntectonic plutons and dykes to constrain the timing of shearing and (ii) vorticity and strain analysis on pluton's megacrystic facies deformed in the magmatic state and during final stages of crystallization. Obtained ages show that the shear zone pair was active under high temperature at 583.5±4.6 Ma, while felsic dykes were emplaced in the brittle regime in the wall rocks. Average vorticity estimates of 0.70 indicate a strong component of pure shear in the shear zones. Despite the transpressional character, the dispersion in estimates of thinning and thickening for the Senador Pompeu shear zone highlights variations of offset rate for the interacting branches that leads to localized transtension. We conclude that the kinematic framework of the Senador Pompeu and Tauá conjugate pair involves the formation of a dextrally closing zipper structure involving the trailing Cococi shear zone to the southwest, which in turn caused the northeastward extrusion of the enclosed crustal wedge and possibly activation of the nappe system of the Ceará Central domain.

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“…The Ceará Central domain, which hosts the Itataia deposit, is composed of the following lithotectonic units: Archean remnants of tonalite-trondhjemite-granodiorite (TTG) of the Cruzeta Complex, with ages between 2.85 and 2.64 Ga (Fetter 1999); juvenile Paleoproterozoic sequences of the Algodões-Choró unit, of the Madalena suite, and of the Canindé do Ceará Complex, with ages ranging from 2190 to 2130Ma (Fetter 1999;Martins 2000;Castro 2004;Arthaud et al 2008b;Torres et al 2008;Costa et al 2015Costa et al , 2018; high-grade Neoproterozoic metasedimentary sequence of the passive margin of the Ceará Complex (Cavalcante et al 2003); Neoproterozoic magmatic continental arc of the Tamboril -Santa Quitéria Complex (Fetter 1999, Fetter et al 2003; Neoproterozoic/Cambrian-Ordovician post-collisional to anorogenic granitoids (Castro et al 2012); Paleozoic molasse basins associated with strike-slip shear zones (Teixeira et al 2004); and the Cretaceous magmatism, mainly represented by the Rio Ceará-Mirim dike swarm (Hollanda et al 2006) (Figs. 1 and 2).…”

Section: Ceará Central Domainmentioning

confidence: 99%

A hydrothermal karst-hosted U-P deposit related to Pangea break-up: Itataia deposit, Borborema Province, Northeastern Brazil - a review

Cavalcanti¹,

Bessa²,

Santos³

et al. 2018

JGSB

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The Itataia U-P deposit holds the second largest uranium reserve in Brazil. All of the uranium is contained within the microcrystalline structure of fluorapatite, which is the ore mineral of the collophanite bodies. The main lithology that hosts the mineralization is marble, and the collophanite occurs as massive bodies, stockwork vein, breccia, filling vugs in episyenites, and disseminated in host rocks. This review shows that five important episodes in the Northern Borborema Province, leading to the consolidation of the Itataia U-P deposit: i) deposition of a phosphate-rich Neoproterozoic supracrustal quartz-pelite--carbonate sequence, represented by the Itataia Group; ii) building of the Neoproterozoic Tamboril-Santa Quitéria continental magmatic arc, responsible for the partial melting of the phosphate-rich supracrustal sequence; iii) Na-metasomatism related to Neoproterozoic/Cambrian-Ordovician post-collisional to anorogenic granitoids, which generated uranium-rich albitite, as well as barren episyenite bodies; iv) Cretaceous hydrothermal karstic event related to the generalized fracturing of the continental crust caused by the Pangea break-up and making possible the deposition of collophanites in the karstic features and vugs in episyenites; v) reworking of the collophanites with the deposition of breccia in paleokarstic features in the marble.

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Geochemistry and U–Pb zircon ages of plutonic rocks from the Algodões granite-greenstone terrane, Troia Massif, northern Borborema Province, Brazil: Implications for Paleoproterozoic subduction-accretion processes

Cited by 36 publications

References 113 publications

Accretion Tectonics in Western Gondwana Deduced From Sm‐Nd Isotope Mapping of Terranes in the Borborema Province, NE Brazil

Accretion Tectonics in Western Gondwana Deduced From Sm‐Nd Isotope Mapping of Terranes in the Borborema Province, NE Brazil

Zippered Shear Zone Model for Interacting Shear Zones in the Borborema Province, Brazil, as Constrained by U‐Pb Dating

A hydrothermal karst-hosted U-P deposit related to Pangea break-up: Itataia deposit, Borborema Province, Northeastern Brazil - a review

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