Which mechanism heats the mantle wedge during subduction?

💡 Explanation

Frictional heating increases temperature during subduction, creating magma because kinetic energy converts to thermal energy. High temperatures in the mantle wedge promote partial melting; rather than conduction or adiabatic effects dominating at those depths.

• Which mechanism amplifies magma production beneath island arc volcanoes during subduction?
• Which risk increases during prolonged flooding of alluvial plains containing fine silt deposits?
• Which process causes the smoothing and shaping of desert ventifacts?
• Ecosystem collapse expands into fjords following rapid sediment buildup driven by glacial melt, what process is directly suppressed?
• Which ecosystem change results when pyroclastic flows deposit large amounts of ash?
• Which risk increases following a large subduction-zone earthquake in coastal regions?