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,
This Is What Rock n' Roll Looks Like Porcelain Black complimented R3hab's remix in an interview with MTV News: "I wish[ed] his remixes were the official singles because they really pop off next level. I love all the spooky horror pop synths he throws in the mixes, and the breakdowns make me wanna throw back shots of whiskey and hair whip. If I could have sex with a song I'd def be tappin’ dat remix!" Described as "in-your-face", "This Is What Rock n' Roll Looks Like" is influenced by the genres of rock, dance-pop, and power pop, while containing "roaring" guitars and lyrics which aim to remind listeners