Geochemistry and U–Pb zircon age of the Paleoproterozoic metasedimentary rocks from the Bidou I, Nyong Series, Cameroon: Implications for provenance and tectonic setting

Petrology and geochemistry of metamorphosed rocks associated with iron formations of the Toko‐Nlokeng iron deposit, (Southern Cameroon): Implications for geodynamic evolution and mineralization

“…This trench and the migmatization of TTG are likewise contemporaneous and is in good agreement with earlier investigations (Bouyo Houketchang et al, 2019;Kwamou et al, 2021;Loose & Schenk, 2018). This age also coincides with the times that BIFs, amphibolites, and metasedimentary rocks were formed (Djoukouo et al, 2021;Kamguia Woguia et al, 2022;Kwamou et al, 2021;Owona et al, 2021;Soh et al, 2021) Nyong Complex, are evidence of the earliest modern-style plate tectonic activity as described by Chaves and Porcher (2020). They also belong to the regional Transmazonian/Eburnean orogenic event.…”

“…However, the zircon grain sample from the Mewengo iron deposit's granitic gneisses shows an age of 2362–20 Ma (Kouankap Nono et al, 2022), which is within the bounds of the most recent metamorphic event known to have occurred in the Nyong Complex and is in good agreement with earlier investigations (Bouyo Houketchang et al, 2019; Kwamou et al, 2021; Loose & Schenk, 2018). This age also coincides with the times that BIFs, amphibolites, and metasedimentary rocks were formed (Djoukouo et al, 2021; Kamguia Woguia et al, 2022; Kwamou et al, 2021; Owona et al, 2021; Soh et al, 2021). In the Palaeoproterozoic era, this crustal development will subsequently be vulnerable to high‐grade metamorphism (2.3–2.05 Ga).…”

“…Several Neo‐ and Mesoarchean zircon crystals in IFs of the Nyong Complex strongly indicate that Palaeoproterozoic subduction may have occurred beneath a hidden Archean block (i.e., a continental arc). This geodynamic evolution is linked to the tectonic setting of the Nyong Complex during the Trans‐Amazonian Eburnian Orogeny (e.g., Bouyo Houketchang et al, 2019; Djoukouo et al, 2021; Fuanya et al, 2019; Kamguia Woguia et al, 2022; Loose & Schenk, 2018; Moudioh et al, 2020; Owona et al, 2021; Owona et al, 2022; Owona, Ratschbacher, et al, 2020; Soh et al, 2021). Continental arcs have an extensive range of compositions, from silica‐poor stages associated with the early stages of development of convergent plate margins to highly evolved magmas marking the end of subduction (Santos et al, 2021).…”

“…This can be used to explain the greater endowment of iron deposits within the upper craton in the Nyong Complex. Djoukouo et al, 2021;Loose & Schenk, 2018;Nga Essomba et al, 2020;Owona et al, 2022;Owona, Ratschbacher, et al, 2020;Soh et al, 2021;Soh Tamehe et al, 2022) eny (e.g., Bouyo Houketchang et al, 2019;Djoukouo et al, 2021;Fuanya et al, 2019;Kamguia Woguia et al, 2022;Loose & Schenk, 2018;Moudioh et al, 2020;Owona et al, 2021;Owona et al, 2022;Owona, Ratschbacher, et al, 2020;Soh et al, 2021). Continental arcs have an extensive range of compositions, from silica-poor stages associated with the early stages of development of convergent plate margins to highly evolved magmas marking the end of subduction (Santos et al, 2021).…”

Tracing the Origin of Metasedimentary Rocks in the Tortiya Diamond Region (Northern Côte d’Ivoire)

“…Geochemical studies of the metavolcanic rocks of Birimian greenstone belts are numerous [1] [4] [5] [8] and varied, whereas Birimian sedimentary rocks in comparison have received very little attention [9] [10], despite representing a reliable source of information on the provenance and evolution of the Earth's crust [11]. While it is true that petrographic study, through the description of a rock's mineralogical assemblages, enables us to define part of its geological history, this step remains insufficient when it comes to examining metasediments.…”