Large rivers, megafans and other Quaternary avulsive fluvial systems: A potential “who's who” in the geological record

Despite findings based on Quaternary records, a major challenge remains to identify characteristic facies assemblages for reconstructing large rivers, avulsive fluvial systems and megafans in the geological archive. The scale-size limitation of the sedimentary structures and the insufficient sedimentological understanding of the architectural characteristics of fluvial landforms and sub-environment complexity of large fluvial systems and megafans are some of the issues that need additional research when looking for analogues in the sedimentary record.