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← GeographyWhich outcome occurs when freeze-thaw exceeds soil cohesion?
A)Extensive downslope regolith solifluction✓
B)Formation of patterned stone circles
C)Increased chemical rock weathering
D)Accelerated mineral soil horizonisation
💡 Explanation
Regolith solifluction is caused by Freeze-thaw action reducing cohesion; this initiates downslope soil mass movement by plastic deformation because the pore water pressure is above the resisting shear strength. Therefore, solifluction accelerates, rather than forming stone circles, where sorting matters.
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