Origin and tectonic implications of ferroan alkali-calcic granitoids from the Hawal Massif, east-eastern Nigeria terrane: clues from geochemistry and zircon U-Pb-Hf isotopes

Bute, Saleh Ibrahim; Yang, Xiaoyong; Cao, Jingya; Liu, Lei; Deng, Jianghong; Haruna, I. V.; Girei, Musa Bala; Abubakar, Usman; Akhtar, Shamim

doi:10.1080/00206814.2019.1593250

Cited by 30 publications

(12 citation statements)

References 93 publications

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“…Roberts and Clemens (1993) have suggested that, in post-collisional settings, decompression and extension following crustal thickening initiates melting of source rocks, mantle upwelling and underplating of the lower crust by mafic magmas. Following the tectono-magmatic models of Dada (1998), Ferré et al (2002, Bute et al (2019) and Girei et al (2019) for the late-to post-collisional stage of the Pan-African Orogeny, we hypothesize that during the post-collisional period, planar delamination of the continental lithospheric mantle allowed upwelling of basaltic magmas that underplated the lower crust to generate the charnockitic melt. The generated high-temperature charnockitic melt and/or the underplated basaltic magma probably supplied heat to the lower to mid-crustal TTGs and/or subducted metagraywackes which melted and was mixed with a K-rich mafic (mantle-derived) magma to produce the high-K calc-alkaline I-to S-type granites.…”

Section: Charnockite-granite Association -Petrogenetic Constraints An...mentioning

confidence: 65%

“…The complex is composed of three major rock groups: the Migmatite-Gneiss Complex with ages ranging from Neoproterozoic to Paleoproterozoic and Archean (Grant 1970;Rahaman 1976aRahaman , 1988Dada 1998;Krӧner et al 2001;Ekwueme 2003a;Ganev 2012, 2015); low-grade, younger metasedimentary and metavolcanic rocks which formed the Schist Belts considered to be of Neoproterozoic age with most dates varying between 690-489 Ma (Turner 1983;Elueze 1988;Odeyemi 1988;Rahaman 1988;Omitogun et al 1991;Caby and Boessé 2001;Danbatta 2008;Fagbohun et al 2020); and the Older Granite suite which intrude the two earlier lithologies and have Pan-African ages (Rahaman 1976b;Ferré et al 1998Ferré et al , 2002Ekwueme 2003b;Adetunji et al, 2016Adetunji et al, , 2018Girei et al 2019;Ibe and Obiora 2019;Bute et al 2019). The available ages of the Pan-African granites in Nigeria are bracketed between 650 and 580 Ma (Tubosun et al 1984;Rahaman et al 1991;Dada et al 1993;Dada, 1998;Goodenough et al 2014;Bute et al 2019). However, some early magmatic phases at ca.…”

Section: Regional Geologymentioning

confidence: 99%

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Petrography and geochemistry of Neoproterozoic charnockite–granite association and metasedimentary rocks around Okpella, southwestern Nigeria

et al. 2020

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The Neoproterozoic charnockite-granite association of Okpella intrudes metasedimentary and migmatite-gneiss complex rocks in the eastern Igarra Schist Belt, southwestern Nigeria. In order to unravel the complex processes involved in the formation and tectonic evolution of the Igarra Schist Belt during the Neoproterozoic, detailed field, petrographic and whole-rock geochemical study of the charnockite-granite association and metasedimentary rocks around Okpella was conducted. Published data on the metasedimentary rocks and Pan-African granitoids in different sectors of the belt were also compiled for detailed interpretations. Results of the study revealed that the charnockites and granites of Okpella show primary magmatic mineralogy and geochemical characteristics. They are silicic ( 63 wt. % SiO2), metaluminous to peraluminous, high-K calcalkaline, ferroan, post-collisional granitoids. The garnet-biotite schist, calc-silicate gneiss and quartzite in the area have paragenesis characteristic of low-medium grade metasedimentary rocks. The mineralogy and geochemistry of the charnockites suggest that the charnockitic melt was derived by partial melting of underplated basaltic (mantle-derived) magma and assimilation-fractionation processes at lower crustal levels.The granites probably originated from mixed melts derived from lower-to mid-crustal tonalites-trondhjemitesgranodiorites and/or subducted metagreywackes and mantle-derived magmas (probably the charnockitic melt progenitor). The granites and charnockites are coeval and were presumably emplaced during the post-collisional stages of the Pan-African Orogeny. The garnet-biotite schist, calc-silicate gneiss and quartzite represent 1 metamorphosed immature to slightly mature sedimentary rocks, probably greywacke, marl and subarkose, respectively, that were sourced from intermediate-acidic rocks which underwent low-moderate chemical weathering with minor contribution from recycled sediment sources and deposited in active continental environments. The Neoproterozoic evolution of the Igarra Schist Belt, therefore, involved deposition and infolding of sediments in active continental margin during the early Pan-African followed by upwelling of basaltic magma from the mantle which underplated the lower crust to generate the charnockitic and granitic melts through mantle-crust interaction during the late Pan-African.

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Section: Charnockite-granite Association -Petrogenetic Constraints An...mentioning

confidence: 65%

Section: Regional Geologymentioning

confidence: 99%

Petrography and geochemistry of Neoproterozoic charnockite–granite association and metasedimentary rocks around Okpella, southwestern Nigeria

et al. 2020

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“…This Paleoproterozoic core (2.5–2.1 Ga; Penaye et al., 1989; Soba et al., 1991) was reworked and intruded at 832–545 Ma (Bouyo et al., 2015 and references therein). Upper Neoproterozoic granitoids are common in the Hawal Massif to the northeast (595–580 Ma; Bute et al., 2020; Dawai et al., 2013; Ngoniri et al., 2021).…”

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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“…Several efforts were made in the past to study the radioactive mineral composition of the rocks of the northeastern Nigerian geological terrain (comprising of both the sedimentary and the basements parts) especially, the uranium enrichment areas. These include the studies by [ [12] , [13] , [14] , [15] , [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] ]. The above-mentioned studies used the various geological, petrological, and geochemical methods in the study of these areas in terms of radioactive mineral occurrences, origin, and their host structures.…”

Section: Introductionmentioning

confidence: 99%

Radiogenic heat production estimation towards sustainable energy drive in northeastern Nigeria

Yusuf

Lim

Abir

2023

Heliyon

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Origin and tectonic implications of ferroan alkali-calcic granitoids from the Hawal Massif, east-eastern Nigeria terrane: clues from geochemistry and zircon U-Pb-Hf isotopes

Cited by 30 publications

References 93 publications

Petrography and geochemistry of Neoproterozoic charnockite–granite association and metasedimentary rocks around Okpella, southwestern Nigeria

Petrography and geochemistry of Neoproterozoic charnockite–granite association and metasedimentary rocks around Okpella, southwestern Nigeria

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

Radiogenic heat production estimation towards sustainable energy drive in northeastern Nigeria

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