What Tectonic Plates Caused Mt St Helens To Erupt?
Answer and Explanation: Nearly 275,000 years ago, Mount St. Helens formed from eruptions caused by the subduction of the Juan De Fuca Plate below the North American Plate. When these plates collided and as the Juan De Fuca Plate subducted under the North American Plate, magma rose. What plates caused Mt St Helens to erupt? …
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