Which erosional outcome occurs in mountainous terrain undergoing glacial freeze-thaw cycles?

💡 Explanation

Cirque expansion happens because increased water volume expands upon freezing, exerting pressure on the rock. This freeze-thaw weathering mechanically weakens the rock within the cirque, enabling glacial plucking and abrasion. Therefore cirques grow larger, rather than deposition or fluvial erosion occurring.

• Which consequence arises when construction destabilizes Arctic permafrost?
• Which outcome occurs when increased rainfall accelerates decomposition weathering?
• Which outcome arises from thermal expansion when permafrost degradation causes subsurface ice to melt disproportionately in a region?
• Which mantle process results when a subducting slab reaches a density threshold?
• Which topographical feature forms down-slope following sediment deposition during episodic flooding cycles?
• Which outcome decreases island size when wave diffraction occurs?