Marine Sediments from an offshore rise along the Northeastern South
America are dated to determine when and how the margin has eroded
through time. Unique results have provided insight for when margin
destruction occured and the mechanisms by which continental slopes
are eroded in this region. The Ocean Drilling Program (ODP) Cruise
207 to the Demerara Rise recovered hundreds of meters of core from
1900 to 3200 m depth from an offshore rise along the Suriname and
French Guyana coasts. These efforts produced excellent examples of
sediment failures such as Oligocene slumps and Miocene debris
flows. These deposits occured as a series of events and provide an
excellent context for evaluating the mechanisms and triggers that
contribute to submarine mass wasting. More importantly, this study
is a case example of how continental margins erode down and build
out through time.
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