Ring of Fire in 1929; a magnitude 8.1 in 1949 (Canada's largest recorded earthquake); and a magnitude 7.4 in 1970. The Ring of Fire is a direct result of plate tectonics: the movement and collisions of lithospheric plates. The eastern section of the ring is the result of the Nazca Plate and the Cocos Plate being subducted beneath the westward-moving South American Plate. The Cocos Plate is being subducted beneath the Caribbean Plate, in Central America. A portion of the Pacific Plate and the small Juan de Fuca Plate are being subducted beneath the North American Plate. Along the northern portion, the northwestward-moving
Ring of Fire (song) is like a burning ring of fire," underlined in one of her uncle A. P. Carter's Elizabethan books of poetry. She worked with Kilgore on writing a song inspired by this phrase as she had seen her uncle do in the past. She had written: "There is no way to be in that kind of hell, no way to extinguish a flame that burns, burns, burns". Cash's first wife, Vivian Liberto, offered a different conception of "Ring of Fire" in her book "I Walked the Line". She contended that June Carter Cash was not a co-writer of the song: "To