South Atlantic, Benue Trough, and Gulf of Guinea Cretaceous Triple Junction

Grant, Norman K.

doi:10.1130/0016-7606(1971)82[2295:sabtag]2.0.co;2

Cited by 173 publications

(88 citation statements)

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“…The origin, tectonic evolution, and the stratigraphy of the Benue Trough has been discussed by several authors [1][2][3][4][5][6][7] considered the Benue Trough as a continuation of a sinistral shear fracture zone crossing the Mid Atlantic Ridge with a counterpart in Brazil. Wright [6], considered the trough as a sediment filled rift of tensional origin.…”

Section: Tectonic Settingmentioning

confidence: 99%

“…Wright [6], considered the trough as a sediment filled rift of tensional origin. Burke [4] and Grant [7] on their part, considered the Benue Trough as a "failed" branch of a triple plate margin junction. Burke et al, 1970 went further to propose an aulacogen model which refers to the Benue Trough as the failed arm of a triple RRR (rift-rift-rift) junction which evolved by mantle upwelling, crustal stretching and the separation of the West African South American continental plates.…”

Section: Tectonic Settingmentioning

confidence: 99%

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Paleocurrent Analysis of the Sandstone Body in Akpoha and its Enviorns (Lower Benue Trough) South-East Nigeria

Ts¹,

Is²

2017

J Geol Geophys

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Palocurrent analysis study was carried out in Amsiri, Akpoha and its environing in the lower Benue Trough. This study was carried out to determine the direction of ancient flow. Compass/clinometers were used to obtain several measurements from outcrops within the study area. Sedimentary structures were also observed in the study area which includes tabular cross stratification, beddings, herribone structures, asymmetrical ripples and trough cross beds. Asymmetrical ripples and trough cross beds indicates a low energy current. Tabular cross stratifications, herribone structures, where formed by high energy currents. The herribone structures are evidence of different paleocurrent directions as they are formed when current periodically flows in opposite directions. Based on the Rose diagram plot, the paleocurrent direction pointed at two directions; NE direction in location 2 and 3 which are Ameata and Ibii and the NE/SW/NW direction in location 1 which is Akpoha. This however shows that the sediments were derived from two main sources.

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Section: Tectonic Settingmentioning

confidence: 99%

Section: Tectonic Settingmentioning

confidence: 99%

Paleocurrent Analysis of the Sandstone Body in Akpoha and its Enviorns (Lower Benue Trough) South-East Nigeria

Ts¹,

Is²

2017

J Geol Geophys

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“…However, there was a structural inversion of the Abakaliki Trough during the Coniacian -Santonian times. This movement led to the formation of two depressions on the flanks of the anticlinorium; the narrow Afikpo syncline on the southeast and much wider Anambra basin on the northwest (Lucas and Ishiekwene, 2010;Grant, 1971;Murat, 1970). These depressions became the point of foci after the Santonian.…”

Section: Geological Settingmentioning

confidence: 99%

Hydrogeophysical assessment of some parts of Anambra basin, Nigeria

Chinwuko

Anakwuba

Nwokeabia

et al. 2014

International Journal of Advanced Geosciences

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“…The Benue rift, the failed arm of the triple junction, was formed during the separation of the South American plate from the African plate in the Mesozoic times through the Gulf of Guinea-South Atlantic-Benue triple junction (Burke et al, 1971;Grant 1971), as cited by Obiora and Charan (2011a) (Figure 1). The Benue rift is subdivided into Upper, Middle, and Lower parts based on geographic locations (Petters, 1978;Nwajide, 1990;Idowu and Ekweozor, 1993;Obaje et al, 1999) Aptian to Coniacian) sedimentary rocks that have been compressionally folded, faulted, and uplifted in several places and have undergone regional burial metamorphism at the anchizonal to lower greenschist grade (Benkhelil, 1986(Benkhelil, , 1987Obiora, 2002;Obiora and Umeji, 2004;Obiora and Charan, 2011b).…”

Section: Geological Setting and Local Geologymentioning

confidence: 99%

Whole-rock geochemistry of basic and intermediate intrusive rocks in the Ishiagu area: further evidence of anorogenic setting of the Lower Benue rift, southeastern Nigeria

Chukwu¹,

Obiora²

2014

Turkish J Earth Sci

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IntroductionThe Lower Benue rift is the southern part of the intracontinental Benue rift-basin, which extends from the Niger Delta northeast towards the southern part of Cameroun, a distance of about 1000 km long and 80 km wide. Its evolutionary history was traced to the opening of the Gulf of Guinea and the South Atlantic during the separation of the South American plate from the African plate in the Mesozoic era (Burke et al., 1971;Grant, 1971) (Figure 1), accompanied by magmatic activities that span the Jurassic (Bajocian) to the Tertiary (Umeji, 2000).The first report of the existence of intrusive rocks in the Lower Benue rift was by Wilson and Bain (1928), who described the rocks exposed at Lokpanta during the construction of the Port Harcourt-Enugu railway line as intrusions (Obiora and Charan, 2010). The intrusive and volcanic rocks in the Lower Benue rift have been described as intermediate to basic in composition and associated with lead-zinc mineralization (Farrington, 1952;Gunthert and Richards, 1960;Cratchley and Jones, 1965; Nwachukwu, 1972), as cited by Obiora and Charan (2010). Burke et al. (1971) described the rocks (volcanic and intrusive) around the Abakaliki area (Figure 1) as andesite lavas and tuffs and proposed a subduction origin for the rocks in the Benue rift. However, Olade (1978, 1979) reported alkali basalts and tuffs with spilite using petrographic and geochemical data and concluded that the rocks were within plate 'hotspot' basalts. Some others

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South Atlantic, Benue Trough, and Gulf of Guinea Cretaceous Triple Junction

Cited by 173 publications

References 0 publications

Paleocurrent Analysis of the Sandstone Body in Akpoha and its Enviorns (Lower Benue Trough) South-East Nigeria

Paleocurrent Analysis of the Sandstone Body in Akpoha and its Enviorns (Lower Benue Trough) South-East Nigeria

Hydrogeophysical assessment of some parts of Anambra basin, Nigeria

Whole-rock geochemistry of basic and intermediate intrusive rocks in the Ishiagu area: further evidence of anorogenic setting of the Lower Benue rift, southeastern Nigeria

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