| This study of Oualidia Lagoon distinguishes two domains: a domain under an essentially marine influence, characterized by a sandy facies, poor in heavy metals and organic matter but rich in strontium and biogenic carbonates. These sediments are azoic and undergo a thanatocoenose transport; a portion under a typically lagoon influence characterized by silty-muddy to silty facies with important concentrations of organic matter and metallic elements, but poor in strontium and carbonate quantities. Microfauna is a lagoon-like, well diversified and abundant, biocoenosis, eurythermic and euryhaline. It is clear that the environment is more open to marine influence. |
