Which mechanism causes repeating caldera collapse after dome formation?

💡 Explanation

Caldera collapse repeats because **magma chamber pressure fluctuation** destabilizes the roof. The chamber's pressure support diminishes, causing the overlying rock to fail, therefore causing collapse rather than stability, which would require constant magma replenishment.

• Which hemispheric water deflection results from Earth's rotation?
• Which mechanism causes the formation of an accretionary wedge at a subduction zone?
• Which localized effect results when strong katabatic winds flow downslope from Antarctic ice sheets?
• Which outcome results from thermokarst development in tundra?
• After a long period of intense mechanical weathering, which outcome regarding rates is probable?
• Which consequence results when storm frequency exceeds barrier island migration rates?