Which mechanism creates steep-sided fjords after glacial retreat?

💡 Explanation

When glacial ice erodes a U-shaped valley, differential erosion occurs because ice preferentially scours weaker rock formations and carves deeply on a massive scale. Therefore fjords develop, rather than uplift involving rebound or tectonics, or caldera collapses which initiate with different geological processes.

• Which mechanism contributes to the deflection of geostrophic currents near ocean basin western boundaries?
• Which outcome results when upper-level divergence aloft exceeds surface convergence in a monsoonal cell?
• Which erosional process primarily initiates stream meander formation within an alluvial floodplain environment?
• Which outcome occurs when seasonal meltwater floods a glacial valley?
• Which wave refraction outcome accelerates sea stack weathering?
• Which outcome arises when excessive development restricts floodplains near levees?