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Compilation of zircon ages and bulk rock epsilon Nd values (acquired on same samples) from Cameroon and Chad. Data from Toteu et al. (2006); Penaye et al. (2006); Djouka-Fonkwé et al. (2008); Kwékam et al. (2010, 2013); Isseini (2011); Isseini et al. (2012); Nkoumbou et al. (2014); Shellnutt et al. (2018). The depleted mantle evolution is calculated as a one stage model with data from Salters and Stracke, 2004). COAB basement evolution is from Toteu et al. (2004). Subcontinental lithospheric mantle evolution has been recalculated with the data of Carlson and Irving (1994) acquired on enriched lherzolite xenoliths representative of the Wyoming craton.
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