"Submerged Shorelines" on Glaciated Continental Shelves: Solving the Puzzle?

M. G. Grosswald


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.


Submarine terraces; ice shelves; grounding line; tidal pump; glacial erosion; marine ice sheet; glacioeustasy; sea level changes

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