Alluvial systems at the interface with other environments

Luca Colombera, Marcello Gugliotta, John Holbrook, Ivar Midtkandal

Alluvial systems interfacing with other sedimentary environments are controlled by the interaction of riverine and non-riverine processes. For example, the physiography and process regime of receiving seas and lakes affect river morphodynamics and behaviour. The geomorphology and evolution of upland alluvial environments are intimately connected with forms and processes of linked colluvial and glacial systems. Rivers and aeolian systems often interplay mutually, to shape dryland environments. Recognizing the sedimentary signatures of these interactions in fluvial depositional systems is important, because these translate to potentially complex styles of sedimentary heterogeneity in subsurface successions, and because they act as sensitive recorders of environmental change in the stratigraphic record. This session will showcase research that elucidates the forms and record of interactions between alluvial systems and neighbouring environments. The session aims to be broad in scope, welcoming contributions presenting studies based on field, subsurface or remote-sensing datasets, and on ancient successions and modern environments alike.