A prism- or wedge-shaped, structurally complex zone of faults, folds, and mostly metamorphosed rocks that form along the upper p
arts of a subduction zone where sedimentary material and oceanic crust are scraped off the downgoing slab is called a(n):_____________.
1 answer:
Answer:
Accretionary prism
Explanation:
An accretionary prism or accretionary wedge is a mass of sedimentary material that is scraped off the descending slab at the boundary of a convergent plate
The sediments are pushed into thick vertical piles, where the pressure expels water from the sediments and converts them into rocks.
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