Which crustal outcome occurs with mantle convection-driven subduction?

💡 Explanation

Volcanic island arcs appear near subduction zones because the descending plate melts and magma rises, causing volcanism. Crust is destroyed rather than created through seafloor spreading (mid-ocean ridges), rifting, or transform movement; therefore, island arc formation results.

• Which outcome occurs when a glacial moraine destabilizes a fault?
• Which outcome results when joint density increases near sea stacks?
• Which geological outcome occurs when overlying clay restricts drainage in epikarst?
• Which risk increases along strike-slip plate boundary regions?
• Which consequence results when thixotropy reduction occurs within debris flows?
• Which long-term outcome occurs when wave refraction focuses energy?