Chemical and Sr–Nd isotopic compositions and zircon U–Pb ages of the Birimian granitoids from NE Burkina Faso, West African Craton: Implications on the geodynamic setting and crustal evolution

The relative and absolute chronology of strato-tectonic events in the Gorom-Gorom granitoid terrane and Oudalan-Gorouol belt, northeast Burkina Faso

“…These intrusions can be summarised as (1) a suite that was emplaced at 2164-2162 Ma and (2) a suite which emplaced at 2148-2141 Ma. Taking error into account, the TTG suites span the time interval 2188-2139 Ma, which accords well with magmatic cycle 2 of Gueye et al (2007Gueye et al ( , 2008 for the KKI, and 2190-2150 Ma of Tapsoba et al (2013a) for northeast Burkina Faso. However, it is possible that Magmatic Cycle 2 is made up of discrete magmatic pulses.…”

“…A U-Pb zircon age of 2132 ± 4 Ma for the Belahoura Granite in the northern Bouroum belt (McCuaig, 2006), corresponds with Magmatic Cycle 2 of Pawlig et al (2006) and Gueye et al (2007Gueye et al ( , 2008, for which there is no equivalent U-Pb zircon age in the study area. U-Pb zircon ages of 2170 ± 9 Ma for granodiorite in the Liptako region (Niger) (Ama-Salah et al, 1996) and 2181 ± 7 Ma for granodiorite from the Yalago belt (Burkina Faso) (Tapsoba et al, 2013a(Tapsoba et al, , 2013b do not correspond with magmatic cycles in the study area.…”

“…The geochemistry and isotopic ages of selected samples of batholiths, plutons, dykes and sills related to crystallisation, metamorphism, mineralisation and deformation periods have been published for the WAC by Hirdes et al (1987Hirdes et al ( , 1992Hirdes et al ( , 1996, Lemoine (1988), Milési et al (1989), Leube et al (1990), Liégeois et al (1991), Léger et al (1992), Davis et al (1994), Delor et al (1995aDelor et al ( , 1995b, Pons et al (1995), Ama-Salah et al (1996), Bossière et al (1996), Kouamelan (1996), Abdou et al (1998), Bonnot et al (1998), Daouda-Yao (1998), Doumbia et al (1998), Davis (1998, 2002), Oberthür et al (1998), Potrel et al (1998), Adou (2000), Egal et al (2002), Castaing et al (2003), Gasquet et al (2003), Dioh et al (2006), Feybesse et al (2006), de Kock et al (2011de Kock et al ( , 2012 and Tapsoba et al (2013aTapsoba et al ( , 2013b; in contrast, http://dx.doi.org/10.1016/j.jafrearsci.2015.04.008 1464-343X/Ó 2015 Elsevier Ltd. All rights reserved. only few geochronological ages have been reported for the Oudalan-Gorouol belt (OGB) and the Gorom-Gorom granitoid terrane (GGGT), including the 3 oldest known U-Pb crystallization ages for the West African craton .…”

Geochemistry and U–Pb zircon ages of plutonic rocks from the Algodões granite-greenstone terrane, Troia Massif, northern Borborema Province, Brazil: Implications for Paleoproterozoic subduction-accretion processes

“…Tectonic evolution for most of these greenstone terranes starts with early oceanic/back-arc basin development at 2260e2230 Ma (e.g., Abouchami et al, 1990;Silva et al, 2001;Baratoux et al, 2011;Nyame et al, 2013), followed by widespread calc-alkaline/TTG volcanism/plutonism at~2190e2120 Ma, and final continental collision and metamorphism at ca. 2100e2030 Ma (e.g., Vanderhaeghe et al, 1998;Gueye et al, 2008;Tapsoba et al, 2013;Lompo, 2009;Oliveira et al, 2011;Barreto et al, 2013).…”

A review of the mineral potential of Liberia

“…These were subsequently intruded by several generations of voluminous Eburnean granitoids, which evolved over time from more calc-alkaline to potassic post-collisional types, and which occupy as much as 70 per cent of the Birimian terrane. The Birimian volcano-sedimentary belts have been dated between c. 2250 and 2100 Ma (Feybesse et al, 2006;Parra-Avila et al, 2016), and the granitoids were emplaced between c. 2200 and 2070 Ma (Baratoux et al, 2011;Tapsoba et al, 2013;Eglinger et al, 2017). These granitoids have widely variable isotopic compositions, reflecting varied crust and mantle sources (Eglinger et al, 2017).…”