Why may a growing lava dome collapse suddenly?

💡 Explanation

Lava dome collapse can occur because increasing shear stress within the dome will eventually overcome the cohesive forces between individual pyroclasts, triggering sector collapse. Pyroclast cohesion is a primary force, therefore shear stress causes collapse rather than other volatile based process.

• Which mechanism causes long-term cyclic uplift and subsidence along a strike-slip fault zone?
• Which outcome results when wave-driven dissolution erodes coastal chalk cliffs?
• Which consequence results when intense localized heating affects a planetary ocean current?
• Which mechanism causes the formation of linear valleys when plates slide past each other at a transform boundary?
• Which outcome results when differing fault movement causes horizontal displacement?
• Which outcome results after permafrost degradation from solifluction?