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xenn [34]
3 years ago
8

The Cascadia subduction zone is 1,100 kilometers long, and its characteristics of youthful oceanic plate and strong coupling wit

h the overriding plate are similar to situations in southwestern Japan and southern Chile where very large earthquakes have occurred.
(A) True
(B) False
Geography
2 answers:
iren2701 [21]3 years ago
6 0

Answer:

(A) True

Explanation:

The Cascadia subduction zone is 1,100 kilometers long, and its characteristics of youthful oceanic plate and strong coupling with the overriding plate are similar to situations in southwestern Japan and southern Chile where very large earthquakes have occurred. The Cascadia subduction zone is a convergent plate boundary that stretches from Northern Vancouver Island to Cape Mendocino California, It results from the subduction of the Juan de Fuca Plate beneath the North American plate. The Cascadia subduction zone is stable with no significant seismic activity.

Aneli [31]3 years ago
3 0

Answer:True

Explanation:Cascadia subduction is about 1000 to 1100kilometers long about 600miles, it spans from North Carolina to British Columbia.

It is a fault zone with about 41 earthquakes in the last 10,000 these earthquakes have occured years as far between 190 years to as much as 1200 years apart. Evidence of this great earthquake also came from Japan. The earthquake that caused Cascadia subduction also caused the coastline to drop several feet and a tsunami to form and crash into the land.

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Sea drilling cores are one way to get samples that can be used for analysis whereby some information such as type of sediment on the seafloor and type of rock on the seafloor can be known. Surface samplers can be collected from sediment at very top layers or inside deep of the ocean floor. These samples could have animals hidden, , water and some particles that can be analysed in the muddy deep, devices such as Coring devices can be used in collection of cores. The information that can be determined directly by analyzing seafloor drill cores are;

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