You are walking on the beach along the south-coast of Alaska. You see rocks cut by numerous faults that consist of basalt with evidence of eruption in the ocean, deep-water chert, mudstone, and sandstones with abundant volcanic material. What tectonic setting would you assign to these rocks?

A) passive continental margin sequenceB) forearc basinC) accretionary wedgeD) continental interior basin

Question

Geography

Sasha Hopkins

8 March, 15:33

You are walking on the beach along the south-coast of Alaska. You see rocks cut by numerous faults that consist of basalt with evidence of eruption in the ocean, deep-water chert, mudstone, and sandstones with abundant volcanic material. What tectonic setting would you assign to these rocks?

A) passive continental margin sequenceB) forearc basinC) accretionary wedgeD) continental interior basin

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Answers (1)

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Jason Trevino · Answer 1

C. Accretionary wedge

Explanation:

Accretionary wedge is the tectonic setting that i will assign to the rocks as accretionary wedge can be best described as a mass of materials scraped off an area of oceanic crust and piled up at the edge of the overriding plate.