34th IAS, International Meeting of Sedimentology, "Sedimentology to face societal challenges on risk, ressources and record of the past", 7.L Open session of sedimentological studies 34th IAS, International Meeting of Sedimentology, "Sedimentology to face societal challenges on risk, ressources and record of the past", 7.L Open session of sedimentological studies, Sep 2019, Roma, Italy