Geology of the Pacific Northwest debris. Rising above this volcanic platform are a few strikingly large volcanoes that dominate the landscape. The Cascade volcanoes define the Pacific Northwest section of the Ring of Fire, an array of volcanoes that rim the Pacific Ocean. The Ring of Fire is also known for its frequent earthquakes. The volcanoes and earthquakes arise from a common source: subduction. Beneath the Cascade Volcanic Arc, a dense oceanic plate plunges beneath the North American Plate; a process known as subduction. As the oceanic slab sinks deep into the Earth's interior beneath the continental plate, high temperatures and pressures allow water molecules
Ring of Fire (1991 film) Hawaii, especially Kilauea and Mauna Loa, Footage includes roads, houses and cars destroyed by advancing lava, and underwater lava flows. 8. End Credits "Ring of Fire" was released as a VHS video in 1995, and as a DVD in 1997 (rereleased in 2006). It was released on Blu-ray on July 12, 2011, and is also available in HD from the iTunes Store. Ring of Fire (1991 film) Ring of Fire is a 1991 documentary film in IMAX format. It looks at some of the varieties of volcanism and earthquake activity in the Ring of Fire, around the Pacific Rim. The