Evidence of magmatic activity related to Middle Jurassic and Lower Cretaceous rifting from northeastern Brazil (Ceará-Mirim): K/Ar age, palaeomagnetism, petrology and Sr/1bNd isotope characteristics

Bellieni, G.; Macedo, M. H. F.; Petrini, Riccardo; Piccirillo, E. M.; Cavazzini, Giancarlo; Comin-Chiaramontí, P.; Ernesto, Márcia; Macedo, J.W.P.; Martins, Guttenberg; Melfi, Adolpho José; Pacca, I. G.; Min, Ângelo De

doi:10.1016/0009-2541(92)90133-p

Cited by 54 publications

(37 citation statements)

References 34 publications

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“…The volcanic activity of the plume head started 138 Ma ago (Stewart et al, 1996), with a main magmatic episode between 134 and 129 Ma (Peate, 1997). Volcanism occurred in and around the Paraná area, as far as north Brazil in the East Maranhão (115-122 Ma: Fodor et al, 1990) and Potiguar basins (130-140 Ma: Bellieni et al, 1992), and in the Benue basin (Maluski et al, 1995;Coulon et al, 1996) (Fig. 2c).…”

Section: Late Berriasian To Late Aptian: Rifting In the South And Equmentioning

confidence: 90%

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Phanerozoic geological evolution of the Equatorial Atlantic domain

Basile

Mascle

Guiraud

2005

Journal of African Earth Sciences

110

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The Phanerozoic geological evolution of the Equatorial Atlantic domain has been controlled since the end of Early Cretaceous by the Romanche and Saint Paul transform faults. These faults did not follow the PanAfrican shear zones, but were surimposed on Palaeozoic basins. From Neocomian to Barremian, the Central Atlantic rift propagated southward in Cassiporé and Marajó basins, and the South Atlantic rift propagated northward in Potiguar and Benue basins. During Aptian times, the Equatorial Atlantic transform domain appeared as a transfer zone between the northward propagating tip of South Atlantic and the Central Atlantic. Between the transform faults, oceanic accretion started during Late Aptian in small divergent segments, from south to north: Benin-Mundaú, deep Ivorian basin-Barreirinhas, Liberia-Cassiporé. From Late Aptian to Late Albian, the Togo-Ghana-Ceará basins appeared along the Romanche transform fault, and Côte dÍvoire-Parà-Maranhão basins along Saint Paul transform fault. They were rapidly subsiding in intra-continental settings. During Late Cretaceous, these basins became active transform continental margins, and passive margins since Santonian times. In the same time, the continental edge uplifted leading either to important erosion on the shelf or to marginal ridges parallel to the transform faults in deeper settings

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Section: Late Berriasian To Late Aptian: Rifting In the South And Equmentioning

confidence: 90%

“…3), in the Benue basin and in the western part of the Maranhão basin since 147 Ma (Popoff, 1988;Fodor et al, 1990;Maluski et al, 1995). Basaltic dykes intruded around the northwestern Brazil Potiguar basin during Middle Jurassic (Horn et al, 1988;Bellieni et al, 1992) (Fig. 2b).…”

Section: Late Triassic To Jurassic: Rifting In the Central Atlanticmentioning

confidence: 96%

Phanerozoic geological evolution of the Equatorial Atlantic domain

Basile

Mascle

Guiraud

2005

Journal of African Earth Sciences

110

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“…Bellieni et al (1992a) reported tholeiitic and alkaline dikes from northeastern Brazil. On the African side, rift-related volcanites are also known to occur (review by Mascle et al 1988).…”

Section: Romanche Transform Zonementioning

confidence: 98%

Continental strike-slip rifts and their stratigraphic signature: application to the Bangong/Nujiang zone (Tibet) and the South Penninic zone (Alps)

Mattern

Schneider

Wang

et al. 1998

Geologische Rundschau

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Our literature studies show that the thermal regime along continental strike-slip rifts is inconspicuous and that they are "low-volcanicity rifts" at best. Along with that, young continental strike-slip rifts exhibit no signs of major thermally controlled doming. We suggest that the larger the strike-slip component of a rift is, the less likely major thermal doming is causally associated with the rift zone. Since vertical lithosphere movements are reflected in the stratigraphic record of a rifted area, different rift modes (strike-slip, dip-slip) may be distinguished by analyzing the relevant sequences. Two ancient and especially suitable strike-slip rift margins in Tethyan mountain belts, the Bangong/Nujiang zone of Tibet and the South Penninic zone of the Alps, were analyzed with regard to their uplift history. The results confirm recent regional rift models which indicate in both cases that rifting was dominated by strike-slip. The stratigraphic approach may provide significant clues as to the mode of paleorifting when structural data are unavailable.

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“…Only after the airborne geophysical survey (CPRM, 2009), the swarm of mafic dikes near the Itataia U-P deposit have been identified, and later confirmed in the field (Cavalcanti and Bessa 2011). These dikes were correlated to the Rio Ceará-Mirim magmatism (Bellieni et al 1992). …”

Section: Fission Track Datamentioning

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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Evidence of magmatic activity related to Middle Jurassic and Lower Cretaceous rifting from northeastern Brazil (Ceará-Mirim): K/Ar age, palaeomagnetism, petrology and Sr/1bNd isotope characteristics

Cited by 54 publications

References 34 publications

Phanerozoic geological evolution of the Equatorial Atlantic domain

Phanerozoic geological evolution of the Equatorial Atlantic domain

Continental strike-slip rifts and their stratigraphic signature: application to the Bangong/Nujiang zone (Tibet) and the South Penninic zone (Alps)

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

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