Fig. 6
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A : moyennes en éléments majeurs pour les gossans (n = 114, Blot, 2004 ; soufre depuis n = 123, Velasco et al., 2013), les cuirasses ferrugineuses sur profil latéritique (n = 98, Blot, 2004 ; soufre depuis n = 201, Cornelius et al., 2007), les Bog Ore (ou minerai de fer des tourbières ; n = 38, Thelemann et al., 2017 ; soufre depuis n = 26, Wirt et al., 2007) et nos données de KOB (cf. Tab. S1) ; B : moyennes en éléments traces pour les gossans (n = 11 , Blot, 2004), cuirasses sur profil latéritique (n = 98, Blot, 2004) et les cuirasses de KOB.
A: means in major elements for gossans (n = 114, Blot, 2004; sulfur from n = 123, Velasco et al., 2013), iron duricrusts on lateritic profile (n = 98, Blot, 2004; sulfur from n = 201, Cornelius et al., 2007), Bog Ore (n = 38, Thelemann et al., 2017; sulfur from n = 26, Wirt et al., 2007) and our KOB data (cf. Tab. S1); B: means in trace elements for gossans (n = 114; Blot, 2004), iron duricrusts on lateritic profile (n = 98, Blot, 2004) and KOB iron duricrusts.
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