Which process drives preferential mineral sorting within alluvial deposits?

💡 Explanation

Sediments in alluvial deposits sort by density; hydraulic equivalence sorting separates particles of different sizes/densities that settle at similar rates because water flows over sediment beds, therefore, the densest material concentrates, rather than weather unevenly or react to unrelated pressure gradients.

• Which outcome occurs when thermokarst lake expansion destabilizes Arctic pipeline supports embedded within permafrost?
• Which effect arises when the Coriolis force deflects atmospheric pressure gradients near the poles?
• Which hillslope outcome develops, increasing glacial debris transport, when permafrost's active top layer experiences seasonal thaw?
• Which outcome is driven by solifluction within permafrost regions?
• Which outcome occurs when trade winds approach mountainous islands?
• Which outcome is amplified where the descending plate dehydrates?