Which crustal deformation results at a subduction zone?

💡 Explanation

Linear volcanic arcs form due to flux melting; the subducting plate introduces volatiles that lower the mantle's melting point, therefore magma rises and erupts through the overlying crust rather than forming ridges, valleys, or thinning crust.

• Which geophysical outcome primarily disrupts global anchovy populations from South American upwelling regions during an El Niño event?
• Which mechanism causes increased flood frequency in populated regions near alluvial fans after prolonged drought?
• Which mechanism dictates volcanic eruption explosivity when magma's silica content rises above approximately 65%?
• Which mechanism amplifies CO₂ sequestration when increased wind stress drives ocean circulation change?
• Which outcome leads to increased fjord oxygen depletion after accelerated glacial melt?
• Which outcome occurs when acidic rainfall accelerates pedogenesis in basaltic rock?