Which mechanism causes a caldera to form following a large volcanic eruption?

💡 Explanation

When a large eruption depletes the magma chamber, the roof collapses inwards because the internal support pressure is insufficient, creating a large depression called a caldera. Therefore magma chamber collapse results, rather than isostatic rebound, glacial erosion, or tectonic uplift which require distinctly different geological processes.

• Which risk escalates when human-constructed levees significantly constrain a deltaic river's natural floodplain?
• Which mechanism causes increased soil liquefaction following land reclamation using alluvial deposits rich in silt?
• Which risk escalates when a lava dome's exterior cools?
• Which atmospheric effect intensifies when the subtropical high-pressure zone descends, compressing air within Hadley cells?
• Which weather phenomenon results from the Coriolis effect acting on synoptic air masses influenced by a high-pressure system?
• Which outcome occurs when storm surge enhances longshore drift?