Which condition causes the formation of lobate features in solifluction areas with coarse boulder obstructions?

💡 Explanation

When differential freeze-thaw cycles occur the upslope fine-grained material undergoes solifluction because thawing reduces shear strength, causing it to creep downslope and accumulate behind the obstruction, creating lobate features. Therefore cycles and creep create lobes rather than wind erosion, chemical reaction or techtonic uplift alone causing it which has a different system or trigger.

• Which process causes seismic amplification when shear waves encounter a sedimentary basin bounded by a fault?
• Which climatic effect results when volcanic aerosols remain suspended in atmosphere after large eruption?
• Which outcome results downstream when glaciers accelerate surge flow?
• Which outcome dominates when a locked subduction zone ruptures?
• Which mechanism causes the formation of horst and graben structures within a continental rift zone?
• Which outcome occurs when rapid differential heating amplifies the thermal effect within a stationary air mass?