| Authors | Location | Stratigraphic Unit | Alterations | Pebbles | Age (Ma) | Interpretations |
| Milési et al., [20] ; Kesse, [10] | Bottom | Sandstone, polygenic conglomerates | Silicification + carbonates | Quartz and metavolcanites | (Pigois et al., [34] ) 2194 to 2132 sur zircons (Davis et al., [33] ) | Tectonics: rift basins Environment: Fluvial Source: Birimian rocks |
| Tarkwaian Ghana | Quartzite sandstone, oligomictic conglomerates, sandstone | Sericite + chlorite + epidote + biotite + ankerite | ||||
| Phyllites | Chlorite + sericite | |||||
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| Sommit | Feldspathic sandstone, phyllites | Sericite + carbonates | ||||
| Bonkoungou, [13] ; Bossière et al., [14] | Birimian belt of Houndé (Burkina Faso) | Pelites, sandstone- quartzite, polygenic conglomerates | Muscovite + chlorite + sericite | Quartz, schists, acidic metavolcanites | 2170 ± 7 to 2124 ± 9 over zircons | Tectonics: Graben associated with a rift Environment: Fluvial + acidic pyroclastic clastic Source: volcanic and clastic rocks |
| Sinaré, [35] | Pelite lithic wackes, polygenic conglomerates | Sericite + silicification + carbonates | Quartz, rhyolites, volcanites, Porphyre | ? | Tectonics: supra-subduction Environment: marine deltaic margin + volcanic arc Source: mafic and felsic rocks | |
| The present work | Pelitic feldspathic sandstones Polygenic conglomerates | Hydro-micas (muscovite type) + sericite + opaques | Quartz, mylonite, porphyric microdiorite and dacitic spherolitic tufs | ? | Tectonics: fluvial + volcanic and pyroclastic rocks Environment: + continental margin + volcanic arc Source: mafic and intermediate rocks, context of continental intra chain rifts |