What Caused the Sumatra Earthquake?

Answer

Sumatra is an island that is found in western Indonesia and it is the largest island in Indonesia. There are many earthquakes that have occurred in the area with the most noted being the one that occurred in 2004 which was an undersea megaupthrust earthquake. This particular earthquake was caused by subduction which is a process that occurs when a tectonic plate moves under another tectonic plate. It led to the 2004 Indian Ocean tsunami.
Q&A Related to "What Caused the Sumatra Earthquake"
The most recent massive Sumatra
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It's slightly different than a "common earthquake" The islands of Java and Sumatra are formed by the subduction of the Australian plate under the Eurasian plate. Some places
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The Earth's crust is made up of 12 separate tectonic plates. These plates move and drift at very slow rates of just a couple of inches a year. As the plates move, they grind and scrape
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The epicentre was: around 100 miles west of Sumatra. almost 20 miles below sea level. between Simeulue and mainland Indonesia.
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