Which one of the following best describes volcanism in the Cascade Range of northern California through Washington and its northerly extension as the Garibaldi Belt in SW B.C.?

Question

Quizplus · Accepted Answer

The volcanism in the Cascade Range of northern California through Washington and its northerly extension as the Garibaldi Belt in SW B.C. is related to plate subduction. This is because the Cascade Range is located along the subduction zone where the Juan de Fuca Plate is subducting beneath the North American Plate, resulting in the melting of the mantle wedge and subsequent volcanic activity.

Which One of the Following Best Describes Volcanism in the Cascade