Which mechanism creates an accretionary wedge when an oceanic plate subducts beneath a continental plate?

💡 Explanation

When an oceanic plate subducts beneath a continental plate, the process of off-scraping occurs because sediments and fragments of the oceanic crust are scraped off the descending plate and accumulate against the leading edge of the continental plate. Therefore, an accretionary wedge forms as material accumulates, rather than isostatic rebound, metamorphic alteration, or sediment dissolution, which require different conditions and tectonic settings.

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