Which process limits the average depth of fjords subjected to glacial rebound?

💡 Explanation

When glacial ice mass decreases, isostatic uplift occurs because the Earth's crust rebounds buoyantly, reducing the fjord's basin volume and ultimately its depth. Therefore isostatic uplift decreasing basin volume limits depth increase, rather than sediment infill, wave action, or tectonic subsidence, which operate by different mechanisms or timelines.

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