Cross-section of the Mariana subduction zone, showing the relationship between the Trench, Forearc, Volcanic Arc, and Back-Arc.
Mariana Subduction Zone
Image adapted from Hussong and Fryer, 1981. Download larger version (jpg, 380 KB).

Cross-section of the Mariana subduction zone, showing the relationship between the Trench, Forearc, Volcanic Arc, and Back-Arc.

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