Which outcome preferentially occurs as subtropical dunes migrate downwind against desert pavement?

💡 Explanation

Concentrated heavy mineral lag deposits form because deflation removes lighter particles, leaving heavier grains; this is the winnowing process. Therefore, lag deposits concentrate, rather than uniform distribution, because transport decreases downwind from source areas where uplift is less likely.

• Which mechanism most directly causes an earthquake's surface waves to amplify in specific regions?
• Which outcome is prevalent when stratovolcanoes experience pyroclastic density currents?
• Which feedback process amplifies cirque erosion at equilibrium line?
• Which effect does latent energy exchange through river flows have on regional climate systems?
• Which process causes island migration when sea levels rise?
• Which consequence results when rapid levee construction on the Mississippi restricts floodplain access?