Evidence of the Last Major Earthquake in the Cascadia Subduction

question 43

Multiple Choice

Evidence of the last major earthquake in the Cascadia subduction zone include ____________________.

• A) disturbed sediments on the seafloor
• B) sand layers washed far inshore by tsunami waves
• C) repeating sequences of layers of soil in coastal marshes
• D) all of these are correct.
• E) only sand layers washed far inshore by tsunami waves and repeating sequences of layers of soil in coastal marshes