Earthquake Glossary - accretionary wedge

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  • accretionary wedge

    Sediments, the top layer of material on a tectonic plate, that accumulate and deform where oceanic and continental plates collide. These sediments are scraped off the top of the downgoing oceanic crustal plate and are appended to the edge of the continental plate.


    accretionary wedge

    Accretionary wedge formation cartoon.