The Seafloor

The seafloor is vast and diverse—from hard to soft bottom, cracks and crannies and mountainous ranges—and supports an equally diverse community of animals and microbes.

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Integrated Ocean Drilling Program

Scientists from the Integrated Ocean Drilling Program (IODP) collect sediments drilled from Earth’s crust. This marine...
a colored shakemap from the M5.8 Virginia Earthquake depicts the shake range and epicenter of the earthquake

A Guide to Earthquake Lesson Plans

On August 23, 2011 a 5.8 earthquake emanated from the little-known Central Virginia Seismic Zone. The epicenter was near Mineral, VA, but the tremor shook homes, schools, and office buildings in Washington, DC and...

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