Which morphological feature indicates increased glacial erosion within a cirque basin?

💡 Explanation

When glacial erosion is increased, the freeze-thaw weathering processes concentrated at the headwall of a cirque are accelerated because the bergschrund enhances meltwater penetration. Therefore a pronounced, steep headwall with bergschrund results from greater erosion, not shallower troughs, roches moutonnées (indicative of abrasion), or hanging valleys (related to tributary glaciers).

• Which risk increases significantly when low-silica lava erupts subglacially?
• Which outcome arises when significant bioturbation hinders pedogenesis?
• Which change arises if arid region soils experience increased rainfall?
• Which mechanism causes meromictic lakes to exhibit permanently stratified layers?
• Which effect accelerates sinkhole formation within karst regions?
• Which phenomenon is initiated by the Coriolis effect on prevailing winds approaching mountain ranges?