Which erosional process primarily drives the formation of a cirque in mountainous regions?

💡 Explanation

With freezing and thawing cycles, glacial plucking and abrasion effectively erodes bedrock, creating progressively larger bowl-shaped depressions because ice crystallization within weaknesses extracts rock material coupled with ice scraping. Therefore plucking and abrasion contribute to cirque formation, rather than processes like rain, fracture, or wind which lack the directed force.

• Which mechanism restricts magma ascent during subduction beneath continental crust composed largely of felsic rock?
• Which outcome predominates when a continental plate subducts under another continental plate at a convergent boundary?
• Prolonged rainfall increases stress on river levees, causing which failure mode when shear strength decreases?
• Which outcome occurs when prolonged drought prevents loess stabilization?
• Which process initiates cirque formation in mountainous terrain after prolonged snowfall?
• Which process determines cirque orientation, influencing snow accumulation and glacial formation?