Which outcome occurs when the uplift rate reduces in a landscape containing alluvial fans?

💡 Explanation

Fan entrenchment occurs when decreased uplift lowers sediment supply, because the river incision mechanism cuts down into the existing alluvial fan surfaces, therefore terraces form rather than continued aggradation.

• Which risk increases when extensive freeze-thaw fracturing weakens sandstone cliffs above transverse dunes?
• Which mechanism causes meandering stream morphology enhancement when vegetation is disrupted along riverbanks?
• Which morphological effect results when prevailing winds encounter a mountain range?
• Which landform develops when freeze-thaw cycles and permafrost cause creeping downslope movement of saturated soil?
• Which geographic change results when prolonged anisotropic wind erodes desert pavement?
• Which outcome results when excessive rainfall occurs in heavily fertilized farmland?