"Submerged Shorelines" on Glaciated Continental Shelves: Solving the Puzzle?
Keywords:Submarine terraces, ice shelves, grounding line, tidal pump, glacial erosion, marine ice sheet, glacioeustasy, sea level changes
A hypothesis is proposed which has been based upon an analysis of physical processes operating at the grounding line of the Ross Ice Shelf, Antarctica. It suggests that the submarine terrace- shaped benches of glaciated shelves were formed at the grounding lines of the Pleistocene marine ice sheets, well below the former sea levels. Consequently, present-day depths of the benches cannot indicate the sea levels of the past.