Jaibaras trough: an important element in the early tectonic evolution of the Parnaı́ba interior sag basin, Northern Brazil

Oliveira, Diógenes Custódio de; Mohriak, Webster Ueipass

doi:10.1016/s0264-8172(03)00044-8

Cited by 100 publications

(111 citation statements)

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“…It extends over 6.7 x 10 5 km 2 with approximately 3,500 m of maximum thickness of sediments (Vaz et al 2007). The sedimentation of immature siliciclasts started in the Late Cambrian and Early Ordovician (Jaibaras Group) and took place onto grabens originated from the separation of Laurentia and Baltica (Bond et al 1984, Oliveira & Mohriak 2003. The stratigraphic record of the Parnaíba basin can be divided into three main sedimentary cycles during the Silurian, the Devonian and the Permian-Carboniferous separated by well-marked unconformities all over the basin (Goes et al 1990).…”

Section: Geological Framework Of the Parnaíba Basinmentioning

confidence: 99%

The petrogenesis of tholeiitic diabases in eastern Parnaíba Basin: evidence for geochemical heterogeneities in the subcontinental lithospheric mantle in NE Brazil

et al. 2017

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Section: Geological Framework Of the Parnaíba Basinmentioning

confidence: 99%

The petrogenesis of tholeiitic diabases in eastern Parnaíba Basin: evidence for geochemical heterogeneities in the subcontinental lithospheric mantle in NE Brazil

et al. 2017

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“…Netto (2012) Fendonkin, 1980;and Sekwia Hofmann, 1981. Numerous publications have addressed the regional geology of northwestern Ceará, including the Jaibaras Basin (Costa et al 1973, Kegel et al 1958, Oliveira 2001, Oliveira and Mohriak 2003, Santos and Brito Neves 1984, Schobbenhaus and Brito Neves 2003, Torquato 1995, Torquato and Nogueira Neto 1996.…”

Section: Research Historymentioning

confidence: 99%

“…In Brazil, the fi nal Gondwanan confi guration is represented by the Brasiliano Cycle (Brito Neves et al 2001), which is recorded in northwestern Ceará by the formation of the Jaibaras Graben (Figure 2) with the development of a volcanic-sedimentary sequence known as the Jaibaras Basin (Oliveira and Mohriak 2003).…”

Section: Introductionmentioning

confidence: 99%

First Ediacaran Fauna Occurrence in Northeastern Brazil (Jaibaras Basin, ?Ediacaran-Cambrian): Preliminary Results and Regional Correlation

Barroso

Viana

Filho

et al. 2014

An. Acad. Bras. Ciênc.

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This study reports the first known occurrence of the Ediacaran fauna in northeastern Brazil (at Pacujá Municipality, northwestern state of Ceará) and presents preliminary interpretations of its significance. Regional correlation indicates that the fossils originated in the Jaibaras Basin and that they may represent a new geological system. The depositional environment can be attributed to a fluviomarine system. Nine Ediacaran species can be identified, including members of pandemic groups (e.g., Charniodiscus arboreus Glaessner, 1959; ?Charniodiscus concentricus Ford, 1958; Cyclomedusa davidi Sprigg, 1947; Ediacaria flindersi Sprigg, 1947; and Medusinites asteroides Sprigg, 1949) and endemic groups (e.g., Kimberella quadrata Glaessner & Wade, 1966; Palaeophragmodictya reticulata Gehling & Rigby, 1996; Parvancorina minchami Glaessner, 1958; and Pectinifrons abyssalis Bamforth, Narbonne, Anderson, 2008). Three ichnogenera are also present: Arenicolites Salter, 1857; Palaeophycus Hall, 1987; and Planolites Nicholson, 1873. The relative age of the deposits is between ?Ediacaran and Cambrian, and the fauna resembles the White Sea Assemblage. The bioturbation presents typical unbranched Ediacaran ichnogenera with little depth in the substrate. This previously unknown occurrence of the Ediacaran fauna reinforces the importance of the state of Ceará to Brazilian and global palaeontology.

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“…They were reactivated from latest Palaeozoic to Quaternary times. The studies of Oliveira & Mohiak (2003) and Santos et al (2013) demonstrate that the TBL influenced the formation and deposition of the Palaeozoic-Mesozoic Parnaiba Basin.…”

Section: Introductionmentioning

confidence: 97%

“…The mega-shear zone is exposed from Argentina and Paraguay, through central Brazil, and may be traced through northeastern Brazil into western Africa, where it is known as the Kandi Lineament. The total length of the lineament is estimated to be approximately 4,000 km, making it the most extensive shear zone on Earth (Schobbenhaus Filho et al 1975, Trompette 1994, Oliveira & Mohiak 2003, Arthaud et al 2008, Attoh & Brown 2008, Santos et al 2008b, Cordani et al 2013, Cacama et al 2015.…”

Section: Introductionmentioning

confidence: 99%

Granulite-facies metamorphism at ca. 570-580 Ma in the Porangatu Granulite Complex, central Brazil: implications for the evolution of the Transbrasiliano Lineament

et al. 2017

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ABSTRACT:The Porangatu Granulite Complex is exposed in the central part of the Neoproterozoic Tocantins province in central Brazil, along the boundary between the Brasília Belt to the east and the Araguaia Belt to the west. This is part of the transcontinental Transbrasiliano-Kandi shear system. The complex includes garnet-rich enderbite and charnockite, high-grade gneisses as well as lenses of garnet-bearing mafic granulite or amphibolites, and in situ anatectic charnockite, elongated in the NNE-SSW direction along the Talismã Shear Zone (TSZ). These rocks represent suites of ortho-derived rocks of calc-alkaline affinity and small contributions of tholeiitic basalts and aluminous paragneisses. The structural framework records thrust components probably related to the early stages of an oblique collision during the evolution of Neoproterozoic Brasiliano orogens, and can be understood as involving a collisional system of two crustal blocks, initially with thrust components which in its final stage evolved to a transcurrent system with dextral movement. This led to intense imbrication, generation of mylonitic foliation, stretching lineation, tectonic banding and rotation of structures and minerals. The heterogeneous and progressive ductile deformation was accompanied by metamorphic re-equilibrium in late Neoproterozoic time. Granulite facies conditions reached a metamorphic maximum at temperature and pressure above 850°C and 10 kbar, in an almost anhydrous environment, with or without anatexis. Zircon U-Pb SHRIMP analyses for two selected rock samples indicated the combined age of 580 ± 7 Ma for a charnockite and 548 ± 48 Ma for a mafic granulite from which the charnockite is throught to have been derived. The mafic granulite contains zircon grains of ca. 2.1 Ga, indicating Paleoproterozoic igneous protoliths involved in Neoproterozoic high-grade metamorphism. In addition, older inherited zircon grains of ca.

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Jaibaras trough: an important element in the early tectonic evolution of the Parnaı́ba interior sag basin, Northern Brazil

Cited by 100 publications

References 50 publications

The petrogenesis of tholeiitic diabases in eastern Parnaíba Basin: evidence for geochemical heterogeneities in the subcontinental lithospheric mantle in NE Brazil

The petrogenesis of tholeiitic diabases in eastern Parnaíba Basin: evidence for geochemical heterogeneities in the subcontinental lithospheric mantle in NE Brazil

First Ediacaran Fauna Occurrence in Northeastern Brazil (Jaibaras Basin, ?Ediacaran-Cambrian): Preliminary Results and Regional Correlation

Granulite-facies metamorphism at ca. 570-580 Ma in the Porangatu Granulite Complex, central Brazil: implications for the evolution of the Transbrasiliano Lineament

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