Quiz 6 Flashcards
Major earthquakes, known as Cascadia earthquakes, happen in the Pacific Northwest about every
300 to 900 years.
The evidence that major Cascade earthquakes have happened include all but
glacial deposits.
After the March 11, 2011 Japan earthquake all but the following occurred:
the formation of new islands.
Why are the Cascade earthquakes similar to the Japan earthquake and the Sumatra Boxing Day earthquake?
They are all caused by subduction zones.
The deep-ocean basin includes all of the following features EXCEPT:
continental shelf.
The transition between the shelf and the deep seafloor is:
the continental slope and rise.
Submarine canyons:
cut into the shelf and may extend almost to the shore.
Active continental margins are located:
on the west coasts of both North and South America.
The deepest part of the Pacific Basin are located:
near the margins of South America, Japan, and the Marianas Islands.
Hydrothermal vents are located near:
zones of rapid seafloor spreading.
