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tectonic boundary

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tectonic boundary
In the theory of plate tectonics, a boundary between two or more plates. The plates can be moving toward each other (at convergent plate boundaries), away from each other (at divergent plate boundaries), or past each other (at transform faults). Maps of seismic and volcanic activity across the Earth indicate that most earthquakes and volcanic eruptions occur along or near tectonic boundaries. This is because earthquakes and volcanic eruptions are caused by the scraping, pushing, pulling, and melting of the Earth's lithosphere along these boundaries.
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In this country there used to be a tectonic boundary that ran right through the country, but the cracks have sealed up.
Earth, wind and fire; Quake bill set to run to tens of millions by The Journal (Newcastle, England)
Researchers say that these two ridges may represent a new class of tectonic boundary, called an ultraslow-spreading ridge.
Uncharted territory: ultraslow ridges hold new clues to crust's ... by Gramling, Carolyn / Science News
The one country that has had the most experience with tsunamis caused by near-shore earthquakes is Japan, said Kong, because the country sits in a very active tectonic boundary.
Preparing for natural disasters: Indian Ocean Tsunami Warning System ... by Jean, Grace / National Defense
 
 
 
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