Which process creates a tarn within a mountain cirque?

💡 Explanation

Glacial isostatic rebound causes a depression in the cirque floor where the ice was thickest. This is because the land slowly rises after ice mass reduction; therefore, meltwater collects to form a tarn rather than draining away immediately.

• Which outcome occurs when groundwater rich in dissolved carbon dioxide percolates through limestone formations in an area experiencing prolonged drought?
• Which outcome primarily increases inside a water-filled limestone cave during periods of lower atmospheric pressure?
• Which outcome occurs when rapid tectonic uplift causes an alluvial river to downcut significantly?
• Which mechanism causes meandering stream morphology enhancement when vegetation is disrupted along riverbanks?
• Which primary outcome results when increased subduction increases mantle wedge hydration?
• Which effect accelerates karren formation on limestone outcrops?