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Superplumes across the mantle
Deadlines approaching for Wash. and N.H. geologists
Marshlands in danger
Aftershocks in Taiwan
Piece of the tectonic puzzle found
Shallow earthquake hits Afghanistan
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The continental United States (pictured here rotated 90 degrees) is home to active faults and volcanoes. In this image, yellow dots indicate earthquakes with magnitudes of less than 6.0 that have occurred since 1980. Open circles are earthquakes between magnitudes of 6.4 and 8.0 that have hit since 1900. Triangles represent major volcanoes, white lines represent active faults, and the red circle and triangle in the center mark the Yellowstone hot spot. Earth scientists still have many questions about the structure of the North American continent and how all these dynamic processes relate to each other. Read story. Photo supplied courtesy of the IRIS Consortium.
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