Forming the Coast Range—Ranger Jen’s Oreo Demo
Jennifer Natoli was a seasonal ranger at Redwood National and State Parks in California. In her version of the Oreo® cookie demonstration, the creamy filling is the layers of sediment and basalt on the ocean fl... More
Subduction Accreted Terrane—Redwood National and State Parks, Californ...
The Coastal Ranges are forming as material from the ocean is scraped off the top of the subducting Juan de Fuca Plate.
Landscapes of North Cascades National Park
Snow-covered Mt. Baker, looking west from the North Cascades National Park, Washington. The active volcano results from the ongoing subduction of the Juan de Fuca Plate beneath North America. It pokes up throug... More
Earthquakes and Coastal Landscapes—Redwood
Redwood National and State Parks, California. Visitors to Olympic National Park, Oregon Caves National Monument, or Redwood National and State Parks can look down and imagine the top of the Juan de Fuca Plate a... More
Subduction Volcanic Arc—Mount Rainier National Park, Washington
Mount Rainier is a 14,000 foot (4,300 meter) volcano in the Cascade Range developed above the place where the subducting Juan de Fuca Plate reaches sufficient depth to release hot fluids into the overriding Nor... More
Greater Pacific Northwest—Three Types of Plate Boundaries and a Hotspo...
The Yellowstone Hotspot track is superimposed on other tectonic provinces of the Pacific Northwest. The hotspot first surfaced 17 million years ago as massive outpourings of fluid basalt lava in the Columbia Pl... More