| 21. | This caused the subduction of the Ligurian Basin onto the eastern side.
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| 22. | The data suggest that the earthquake was probably along the subduction interface.
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| 23. | Magmas produced in subduction zone regions have high volatile contents.
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| 24. | Besides subduction, other activities also played important roles in this region.
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| 25. | A slowdown in the subduction may have caused this change.
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| 26. | Subduction is under way at many places on Earth.
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| 27. | The Canadian subduction zone is 800 million years older.
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| 28. | During subduction, the solid rock that tops tectonic plates can get locked.
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| 29. | Examples are the earthquakes in Sumatra, 2004, all in subduction zones.
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| 30. | The existence of oceans is critical to sea-floor spreading and subduction.
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