Which geologic outcome intensifies when an oceanic plate subducts at a steeper angle beneath a continental plate?

💡 Explanation

When the subduction angle increases, the point of magma generation shifts farther inland because the descending plate reaches the required depth for melting at a greater horizontal distance. Therefore volcanic arc migrates inland, rather than viscosity changes, trench deepening, or spreading acceleration which result from different tectonic processes.

• Which mechanism most directly causes shallow-focus earthquakes along oceanic transform faults?
• Which phenomenon results when air rises rapidly at the Intertropical Convergence Zone?
• Which process triggers explosive volcanism when magma viscosity and dissolved gas content are both high?
• Which process causes deep-sea trench formation in ocean-continent subduction zones?
• Which outcome occurs when a continental plate converges at an oblique angle with another, accumulating stress?
• Which primary mechanism causes cyclical avulsions on the apex of an alluvial fan?