Which outcome occurs when high-viscosity magma experiences rapid decompression?

💡 Explanation

A violent explosive volcanic eruption occurs because sudden pressure release causes rapid bubble nucleation, known as exsolution, accelerating magma fragmentation. This builds pressure leading to explosion, rather than gradual lava flow which occurs with low viscosity magmas.

• Which mechanism creates a stratified water column within a fjord following a glacial meltwater pulse?
• Which landform development mechanism explains the sorting of sediment grain sizes within an alluvial fan?
• Which risk increases following disruption affecting surface heat transfer due to altered insolation?
• Which consequence results when groundwater table fluctuates substantially in karst landscapes?
• Which feature characterizes glacial cirques formed in locations with significant permafrost?
• Which outcome reduces forest carbon sequestration when pedogenesis declines?