Which mechanism causes the deepening of a fjord's basin over geologic timescales?

💡 Explanation

Deepening of a fjord's basin occurs through glacial abrasion because the rotational ice movement grinds the bedrock via embedded sediment, causing significant erosion. Therefore abrasion deepens the basin, rather than rebound resisting, deposition filling, or weathering dominating, all requiring different environmental conditions and acting at slower rates.

• Which atmospheric phenomenon results from thermally-driven convection cells?
• Which effect accelerates topsoil creep resulting from permafrost thaw in Arctic regions?
• Which process increases along coastal margins within an ocean gyre when stronger offshore winds develop?
• Which outcome accelerates subsidence in agricultural karst regions?
• Which process limits the downstream extent of an alluvial fan in a confined valley?
• Which consequence results when increased storm frequency overwhelms coastal hydraulic barriers?