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 process MOST directly maintains the high nutrient concentration within oceanic gyre boundary currents?
• Which mechanism exacerbates seismic activity when injecting wastewater near an active fault line?
• Which mechanism drives the formation of desert regions under subtropical high-pressure zones?
• Which process limits nutrient availability despite large oceanic gyre circulation?
• Which risk increases along a floodplain when alluvial mining removes substantial sediment?
• Which outcome occurs when wind surpasses threshold for deflation?