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. 2023 Nov 1;18(11):e0291552. doi: 10.1371/journal.pone.0291552

Fig 5. Examples of gravels from natural sites.

Fig 5

(A) Gravels from the tertiary terraces of Campagne (Dordogne, France); (B) marine gravels from Maguelone (Hérault, France); (C) marine gravels from Cap d’Agde (Hérault, France); (D) gravels from the Quaternary alluvium and vineyards of Croignon (Gironde, France) and (E) gravels from the Landry’s sieving. These gravels were selected and collected according to previous observations of the Landry gravels and before having had knowledge of the lustrous gravels of the other archaeological sites whose raw material is visibly different. Scale = 1 cm.