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How is Mount St. Helens affected by plate tectonics?

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It begins with continental and oceanic plates. These plates move under the conditions of the theories of continental drift and plate tectonics. read more

Plate tectonics created the subduction zone that furnished the material that later, through a long series of eruptions, built Mount St. Helens. Plate tectonics continues to fuel the active volcanism along the west coast of the United States, just as it fuels all other volcanism on earth. read more

Mount St. Helens is located in the Pacific North-west of the United States. It is located in the state of Washington. It is 154 km (96 miles) south of Seattle, Washington and 80 Km (50 miles) northeast of Portland, Oregon. Mount St. Helens is a national volcanic monument. read more

The collision is a very slow moving and long process; it begins with the subduction of the oceanic plate (in the case of Mt. Saint Helen Juan De Fuca Plate) beneath the continental plate (North American Plate). read more

Mount St. Helens, like most other mountains, was built by the forces that we cumulatively lump under the term “plate tectonics”. Plate tectonics created the subduction zone that furnished the material that later, through a long series of eruptions, built Mount St. Helens. read more

Geologic Activity: Mount St. Helens is a volcanic mountain. It is best known for its catastrophic eruption on May 18, 1980. This 9-hour eruption was the deadliest event in the history of the United States. read more

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