Which process leads to the formation of deep submarine fans at the mouths of fjords following deglaciation?

💡 Explanation

When deglaciation occurs, sea levels rise rapidly exposing unstable glacial sediments in fjords, initiating gravity flows (turbidity currents) because of steep topography, depositing coarse sediments at mouths. Therefore sediment gravity flows result, rather than circulation change, as the dominant mechanism rather than tectonic plate subsidence, chemical weathering which affects bedrock properties slowly over time.

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• Which risk increases when a levee, constructed from cohesive soil, is rapidly saturated by floodwater?