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juin [17]
4 years ago
15

Which best describes how an accretionary wedge forms? Group of answer choices as a result of the accumulation of sediment and oc

eanic crust being scraped off a descending oceanic plate during subduction as a result of sediment moving from the continental shelf out across the continental slope during subduction as a result of sediment washing down off the mid-ocean ridge as a result of water flow down submarine canyons after large tectonic events
Mathematics
2 answers:
satela [25.4K]4 years ago
6 0

Answer: Accumulation of sediment and oceanic crust being scrapped off a descending oceanic plate during subduction.

Step-by-step explanation:

Accretionary wedge occurs when there is an accumulation of mostly marine sediments and rocks moving down an oceanic plate during subduction. The plate which moves downward is usually an oceanic plate while the plate which moves above could either be a continental or oceanic plate. The accretionary wedge has the shape of a prism.

A mixture of badly formed rock known as Melange form the Primary rock type in an accretionary wedge.

NNADVOKAT [17]4 years ago
4 0

Answer:

A

Step-by-step explanation:

The question is:

Which best describes how an accretionary wedge forms? Group of answer choices

A) as a result of the accumulation of sediment and oceanic crust being scraped off a descending oceanic plate during subduction as a result of sediment moving from the continental shelf out across the continental slope during subduction

B)  as a result of sediment washing down off the mid-ocean ridge as a result of water flow down submarine canyons after large tectonic events

Accretionary wedge is formed as a result of accumulation of rocks on over-riding plane after being scrapped-off the down going plate during subduction. Subduction is the tectonic movement of plates when one plate collides with another and in doing so goes below another.

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