Which geological action primarily dictates the depth profile morphology of fjords during interglacial periods?

💡 Explanation

When ice sheets retreat, differential isostatic rebound happens because thicker ice previously depressed the crust more at the fjord's center, leading to varying uplift rates and complex sill morphologies. Therefore, differing isostatic rates cause this profile, rather than deposition, sea level changes, or seimic activity which have lesser effects at fjord scale.

• Which mechanism drives the observed periodic changes in global thermohaline circulation strength?
• Which process generates seismic waves characterized by high frequency and rapid attenuation during shallow crustal earthquakes?
• Which mechanism causes preferential sediment deposition on the uphill side of a fault-controlled alluvial fan?
• Which process primarily carves and deepens fjord valleys formed during glacial periods?
• Which feedback results when surface winds strengthen over dune fields?
• Which consequence results when increased glacial flour deposition onto loess?