Learn why an ancient earthquake that sunk a coastal rain forest into the tidal zone may portend a severe natural disaster in the Pacific Northwest today, in this video from NOVA: Making North America: Human. Underlying a “ghost forest” in Washington State is evidence of one of the worst seismic events in North America since human beings arrived on the continent. The event traces to the Cascadia subduction zone, where the Juan de Fuca plate is trying to slide under the North American plate. Sediment core samples suggest that a severe earthquake somewhere along the subduction zone is likely to occur again in the future.
To view the Background Essay and Teaching Tips for this video, go to Support Materials below. This resource was developed through WGBH’s Bringing the Universe to America’s Classrooms project, in collaboration with NASA. Click here for the full collection of resources. To see more resources from NOVA: Making North America, visit the collection page here.
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