Which outcome results when headwall erosion accelerates in a cirque?

💡 Explanation

Enhanced horn formation occurs due to Freeze-thaw weathering rapidly eroding cirque headwalls on multiple sides of a mountain. Because the cirques enlarge and intersect, horn formation is enhanced, rather than merely forming glacial till.

• Which outcome increases when glacial retreat deposits loess?
• Which hazard sharply increases during lava dome growth?
• Which risk increases when building foundations sit atop liquefiable soil deposits during an earthquake?
• Which climatic effect results because mountain ranges force air masses upwards in many global climate regions?
• Which risk increases when a levee system restricts sediment deposition on adjacent floodplains?
• Which primary risk increases when an artificial levee is subjected to prolonged saturation during a major flood event?