1) The duration of shaking during an earthquake is a decent proxy for the earthquake magnitude. A full rupture of the Cascadia subduction zone will…

a. earthquakes

b. volcanoes

c. a trench

d. turbidites

4) .

a. The same number can be found in all the sediment cores gathered between Vancouver to Mendocino.

b. They mark the occurrence of large storms, earthquakes, and volcanic eruptions

c. They also preserve ash from the eruption of Mt Mazama

d. They record 13 great Cascadian earthquakes in the past seven thousand years

e. All of these

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