Control of sedimentation by active tectonics, glaciation and contourite-depositing currents in Endurance Basin, South Georgia

Geomorphology of Ona Basin, southwestern Scotia Sea (Antarctica): Decoding the spatial variability of bottom-current pathways

“…Dynamic interplays between bottom-current activity and gravitational processes have been documented in several Antarctic sites, such as the West Antarctic Peninsula (Camerlenghi et al, 1997;Rebesco et al, 2002), the Wilkes Land slope (Escutia et al, 2002), or Scan Basin (García et al, 2016a). In the northern margin of the Scotia Sea, spatially variable patterns of mass flow processes and contourite sedimentation have been observed in Endurance Basin (Owen et al, 2014).…”

“…This allows fine-scale geomorphological features and recent (i.e., in balance with present-day dominant deepwater processes) shallow subsurface variations of sedimentary processes to be evidenced and mapped. Even though a few studies conducted in parts of the Scotia Sea rely on high-resolution data, most of them are limited either in areal extent within the entire basins (Maldonado et al, 2003;Lobo et al, 2011) or to restricted environments dominated by one specific sedimentary agent (Owen et al, 2014;Ruano et al, 2014;García et al, 2016a).…”