Sur quelques structures sédimentaires des plages et lagunes du littoral gabonais

The comments on the photographs that we present here constitute a follow up to the article "Photographie sous-marine et géologie" (submarine photography and geology) (L. DANGEARD and P. GIRESSE, 1965). They deal with the sedimentary structures - of animal origin for most of them - found in the submerged areas of the fluviomarine ecosystem and that can be compared to those of the continental shelf and great depths.