Volcano were proposed for volcano behavior before the modern understanding of the Earth's mantle structure as a semisolid material was developed. For decades after awareness that compression and radioactive materials may be heat sources, their contributions were specifically discounted. Volcanic action was often attributed to chemical reactions and a thin layer of molten rock near the surface. Volcano A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. Earth's volcanoes occur because its crust is broken into 17 major,
Legend of the Liquid Sword (album) on heavy rotation on hip-hop stations right now." Though many opinions varied on whether the album was the classic "Wu-Tang sound", Ari Levenfeld of PopMatters feels: "If Legend of the Liquid Sword is any indication of the Wu-Tang Clan's efforts to come, it doesn't seem like the group is all that interested in expanding their fan base or growing musically. Maybe they've done what they set out to do. The franchise is working... GZA isn't trying to be something or someone he's not. He's all about the original recipe." Legend of the Liquid Sword (album) Legend of the Liquid Sword