A global review of subaqueous spreading and its morphological and sedimentological characteristics: A database for highlighting the current state of the art

Subaqueous spreading, a type of extensional mass transport that is characterized by ridge and trough morphology, has been documented globally but poorly understood. spreading observed on gently inclined surfaces (typically <3°) when sediment bodies experience sudden reduction shear strength along their basal plane during clay softening or liquefaction sands silty sand sediment. Historically, associated with very large landslides, many unknown aspects these movements have yet to be clarified. Does influences the catastrophic failure? What are sedimentological morphological contribute in initiating this process? These some research questions spurred present work. Here, we introduce database incorporates information from thirty-two case studies, use provide key insights into sedimentary subaqueous will assist identification elsewhere. We find most common passive glacial margins, also active margins. The occurrence contourites interlayered glaciogenic deposits is, cases, landslides (or landslide complexes) morphology. shows seismic loading commonly suggested dominant trigger mechanism, although more geotechnical observations modelling analysis would needed support conclusion. compare terrestrial particular earthquake-related lateral landslides. shares same driving processes potentially mechanisms cases. Future work required address association between its largest Earth, development potential hazard implications. • occurs (<3°). Gliding planes could clays sandy materials undergoing loss strength. It marine SubSpread Database includes 32 studies. Contourite represent often slipping surfaces.