Earth and Planetary Sciences
3 years ago

Submarine landslide channels reveal hidden knickpoints reshaping continental margins.

The Depositional Record
Channel incision into a submarine landslide on a Carboniferous basin margin, San Juan, Argentina: Evidence for the role of knickpoints
Charlotte Allen, Luz E. Gomis‐Cartesio, David M. Hodgson, Jeff Peakall, Juan‐Pablo Milana

Paper Summary

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Submarine landslides can change the shape of underwater landscapes. In Argentina, scientists found deep channels cut into a thick landslide. The channels have steep sides and are filled with gravel and rocks. The channels formed from erosion caused by moving water. As the channels widened, sand and sediment filled them up. Eventually, the channels switched direction and new landslides formed. This shows how underwater landscapes can change over time due to erosion and sediment movement.