Which topographic feature forms because of nivation within cirques?

💡 Explanation

Bergschrund crevasses form because differential movement exacerbates the Freeze-Thaw cycle within the cirque due to nivation processes; therefore, crevasses arise near the headwall, rather than forming solely due to basal sliding downstream within the glacier.

• Which failure type is accelerated as permafrost thaws?
• Which outcome occurs when glacial meltwater inflow exceeds lake outflow?
• Which outcome occurs from increased glacial retreat depositing large quantities of silt?
• Which geochemical consequence results when rapid CO2 absorption diminishes stalactite formation?
• Which effect increases in global coastal areas as the frequency of El Niño events rises?
• Which mechanism forms bowl-shaped depressions specifically called cirques?