Which volcanic activity is triggered when seawater lowers magma viscosity?

💡 Explanation

Subducting oceanic plates introduce water; this lowers magma viscosity via decompression melting. This promotes volatile release and therefore an explosive eruption, rather than effusive events building shield volcanoes because shield type volcanos have a more sicilic composition.

• Which long-term outcome results when construction prevents deep soil horizon bioturbation by earthworms?
• Which consequence results when crustal divergence is restricted?
• Which phenomenon causes surface winds to deflect westward relative to pressure gradient within Hadley cells?
• Which consequence results when a subducting oceanic plate experiences dehydration?
• Which downslope movement increases when permafrost degradation occurs?
• Which instability arises as air masses of various temperatures merge at the Ferrel cell's boundary?