An Active Continental Margin Commonly Has a Much Narrower Continental

question 32

Multiple Choice

An active continental margin commonly has a much narrower continental shelf and a considerably steeper continental slope than does a passive margin because:

• A) the subducting plate forms a steep-sided trench.
• B) undersea volcanoes form steep-sided slopes.
• C) turbidity currents erode terrigenous sediment.
• D) abyssal fans are common.

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