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.?
A) related to plate subduction
B) related to a mid- ocean ridge system
C) related to deep, transform faults
D) related to a mantle plume

Question

Quizplus · Accepted Answer

The Cascade Range and its extension, the Garibaldi Belt, are characterized by volcanic activity that is primarily related to the subduction of the oceanic plates beneath the North American Plate. This process melts the subducting plate, leading to magma formation and volcanic eruptions.

Which One of the Following Best Describes Volcanism in the Cascade