Thick Blocks of Crust Carried Toward a Subduction Zone________

question 12

Multiple Choice

Thick blocks of crust carried toward a subduction zone________ .

• A) can get sliced off the descending slab and transferred to the accretionary continental margin as an accreted terrane
• B) get eroded, contributing a greater than usual volume of sediments to the trench at that point
• C) get uplifted to become an island on the oceanward side of the trench
• D) cause the subduction zone to stop or reverse and begin subducting the other way

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