Lithosphere–asthenosphere interaction and the origin of Cretaceous tholeiitic magmatism in Northeastern Brazil: Sr–Nd–Pb isotopic evidence

Hollanda, Maria Helena Bezerra Maia de; Pimentel, Márcio Martins; Oliveira, Diógenes Custódio de; Sá, Emanuel Ferraz Jardim de

doi:10.1016/j.lithos.2005.04.004

Cited by 49 publications

(18 citation statements)

References 46 publications

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“…Continental lithosphere can directly contribute its compositions to the basaltic magma (Fitton et al, 1991;Zhang et al, 1995;Okamura et al, 2005), or it may act as a passive barrier to upwelling of the asthenosphere, thereby defining the final depth of melting (Langmuir et al, 1992) or a magma contaminant (Glazner and Farmer, 1992). Therefore, geodynamic evolution of continental lithosphere could be traced in the clues of geochemical characteristics of mantle-derived magmatic rocks (Zhang et al, 2002(Zhang et al, , 2003Cvetkovic et al, 2004;Hollanda et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Cenozoic alkali basalts from Jingpohu, NE China: The role of lithosphere–asthenosphere interaction

Yan

Zhao

2008

Journal of Asian Earth Sciences

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Section: Introductionmentioning

confidence: 99%

Cenozoic alkali basalts from Jingpohu, NE China: The role of lithosphere–asthenosphere interaction

Yan

Zhao

2008

Journal of Asian Earth Sciences

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“…This swarm was intruded in the basement of the Borborema Province during two main pulses around 145 and 130 Myear (Tithonian-Hauterivian; Sial et al 1981;Almeida et al 1988;Oliveira and Gomes 1996;Mizusaki et al 2002) or 134-110 Myear (Hauterivian-Aptian: Hollanda et al 2006). This 400-km long tholeiitic dyke swarm is mainly identified from the southern border of the Potiguar basin to the Jaguaribe valley between the Iguatu and Icó basins, widening from 30 to 100 km.…”

Section: Early Magmatism and Riftingmentioning

confidence: 99%

Geological Setting: The Borborema Province

Peulvast

Bétard

2015

Landforms and Landscape Evolution of the Equatorial Margin of Northeast Brazil

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The study area is part of the Brazilian Equatorial continental margin, formed after the Equatorial Atlantic opening in Aptian times. Onshore, a Precambrian basement-the Borborema structural province-is subdivided into several geological domains by a wide system of Late Proterozoic shear zones partly reactivated in the Cretaceous. The present structural pattern is organized around a discontinuous NE-SW set of basins and half grabens-the intracratonic CaririPotiguar rift zone. Representing failed rift structures of Early Cretaceous age with remnants of their post-rift sedimentary cover, it is intersected by the transform margin in the Potiguar Basin area. Remains of the pre-rift cover of the basement are preserved outside these structures (the Parnaiba Basin, to the west) and inside the rift zone in southern Ceará (Araripe Basin). Along the coast, a thin dissected layer of Cenozoic continental sediments (the Barreiras Group) underlies the low-lying "tabuleiros" between the marginal escarpment and the shallow continental shelf.

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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%

“…1 and 2). The Rio Ceará-Mirim dike swarm resulted from the global-scale tectonics and hotspot activity that occurred during the opening of the south and equatorial Atlantic ocean (Hollanda et al 2006). …”

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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Lithosphere–asthenosphere interaction and the origin of Cretaceous tholeiitic magmatism in Northeastern Brazil: Sr–Nd–Pb isotopic evidence

Cited by 49 publications

References 46 publications

Cenozoic alkali basalts from Jingpohu, NE China: The role of lithosphere–asthenosphere interaction

Cenozoic alkali basalts from Jingpohu, NE China: The role of lithosphere–asthenosphere interaction

Geological Setting: The Borborema Province

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

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