Cryogenian crustal evolution in western Nigeria shield: whole-rock geochemistry, Sr-Nd and zircon U-Pb-Hf isotopic evidence from Bakoshi-Gadanya granites

Elatikpo, Safiyanu Muhammad; Li, Huan; Zheng, Han; Girei, Musa Bala; Wu, Jianfei; Amuda, Abdulgafar Kayode

doi:10.1080/00206814.2021.1998799

Cited by 11 publications

(2 citation statements)

References 87 publications

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“…After a prolonged period of quiescence, the Nigeria basement was intruded by Neoproterozoic granites (825–500 Ma; “Older granites”) during collision and welding of the West African Craton with Congo and East Saharan cratonic blocks along the Trans‐Saharan Belt (Ferré et al., 2002; Ominigbo, 2022; Toteu et al., 2004). In the North Nigeria basement, granites were mainly intruded between 710 and 500 Ma (Elatikpo et al., 2022 and references therein) but Tonian (825–764 Ma) intrusive rocks also occur locally (Goodenough et al., 2014; Ogezi, 1977). Granitoid intrusions of similar ages occur in the SW Nigeria basement (715–580 Ma; Ferré et al., 1996; Tubosun et al., 1984).…”

Section: The Niger Rivermentioning

confidence: 99%

The Zircon Story of the Niger River: Time‐Structure Maps of the West African Craton and Discontinuous Propagation of Provenance Signals Across a Disconnected Sediment‐Routing System

Pastore,

Garzanti,

Vermeesch

et al. 2023

JGR Earth Surface

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The Niger River drains a large part of the West African Craton, where rocks ranging in age from Paleoarchean to recent offer an unexcelled opportunity to map the diverse time structures of sediment sources and provide essential information for provenance diagnoses. In this study, U‐Pb zircon dating is complemented with bulk‐sand geochemical (Zr, Hf, REE) and Nd‐Hf isotope data to pin‐point parent rocks of zircon grains and draw inferences on sediment generation across sub‐Saharan western Africa. In Upper Niger sand, zircon ages pass from exclusively Archean in Guinea headwaters to dominantly Paleoproterozoic in the Inner Delta in Mali, testifying to the progressive dilution by tributary sediment derived from the Birimian domain. Zircon ages abruptly change to dominantly Neoproterozoic downstream of the Inner Delta, becoming indistinguishable from those in Saharan eolian dunes across the Sahel. Most of the sediment generated in the headwaters is thus dumped in the marshlands and bedload is reconstituted downstream by recycling eolian sand. Zircon grains in the Lower Niger yielded virtually the same U‐Pb ages as in Benue sediment, indicating an overwhelming supply from the Benue tributary. In the Niger Delta, however, Archean zircons reappear, and both εNd and εHf values become notably more negative, indicating extensive reworking of sand deposited along the coastal plain at earlier times of wetter climate, when artificial barriers to the sediment flux did not exist in the upper to middle Niger River catchment.

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Section: The Niger Rivermentioning

confidence: 99%

The Zircon Story of the Niger River: Time‐Structure Maps of the West African Craton and Discontinuous Propagation of Provenance Signals Across a Disconnected Sediment‐Routing System

Pastore,

Garzanti,

Vermeesch

et al. 2023

JGR Earth Surface

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show abstract

“…Most gold occurrences in the Paleoproterozoic grounds of the West African Craton are orogenic gold deposits formed during the Eburnian cycle about two billion years ago [ [1] , [2] , [3] , [4] ]. The formation of these deposits is directly related to crustal accretion or collisional processes in a subduction context and can be developed in arc, back-arc or accretionary prism environments [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

The metasedimentary-hosted Nyangoubé gold prospect, northwest Côte d’Ivoire: Geochemical and mineralogical characterization of associated hydrothermal alteration

Djagre,

Koffi,

Camara

et al. 2023

Heliyon

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Geochronology and geochemistry of igneous rocks of the Dassa region, Central-Benin: evidence of an Ediacaran emplacement of alkali-calcic and alkaline plutonic and volcanic magmas

Glodji

Bascou

Paquette

et al. 2023

Int J Earth Sci (Geol Rundsch)

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Cryogenian crustal evolution in western Nigeria shield: whole-rock geochemistry, Sr-Nd and zircon U-Pb-Hf isotopic evidence from Bakoshi-Gadanya granites

Cited by 11 publications

References 87 publications

The Zircon Story of the Niger River: Time‐Structure Maps of the West African Craton and Discontinuous Propagation of Provenance Signals Across a Disconnected Sediment‐Routing System

The Zircon Story of the Niger River: Time‐Structure Maps of the West African Craton and Discontinuous Propagation of Provenance Signals Across a Disconnected Sediment‐Routing System

The metasedimentary-hosted Nyangoubé gold prospect, northwest Côte d’Ivoire: Geochemical and mineralogical characterization of associated hydrothermal alteration

Geochronology and geochemistry of igneous rocks of the Dassa region, Central-Benin: evidence of an Ediacaran emplacement of alkali-calcic and alkaline plutonic and volcanic magmas

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