- Rock | Definition, Characteristics, Formation, Cycle, Classification . . .
Rock, in geology, naturally occurring and coherent aggregate of one or more minerals Such aggregates constitute the basic unit of which the solid Earth is composed and typically form recognizable and mappable volumes The three major classes of rock are igneous, sedimentary, and metamorphic rock
- Rock | Definition, History, Artists, Songs, Facts | Britannica
Rock is a form of popular music that emerged in the 1950s and that by the end of the 20th century was the world’s dominant form of popular music It originated in the United States and spread to other English-speaking countries and across Europe in the 1960s
- Rock - Pioneers, Genres, Legends | Britannica
Rock history can thus be organized around both the sound of cities (Philadelphia and Detroit, New York City and San Francisco, Liverpool and Manchester) and the spread of youth cults (rock and roll, heavy metal, punk, and grunge)
- Plymouth Rock | Geology, Legend, History, Facts | Britannica
Plymouth Rock, granite slab upon which, according to tradition, the Pilgrim Fathers stepped first after disembarking from the Mayflower on December 26, 1620, at what became the colony of New Plymouth, the first permanent European settlement in New England
- Rock, Massachusetts, Colony, Map, History, Facts - Britannica
Plymouth Rock, first identified in 1741, became a symbol of freedom in 1774 when it was split by being dragged to Liberty Pole Square in pre-Revolutionary agitation It now rests on its original waterfront site under a portico of granite
- Rock - Social Change, Cultural Evolution, Music Revolution | Britannica
Rock - Social Change, Cultural Evolution, Music Revolution: How, then, should rock’s contribution to music history be judged? One way to answer this is to trace rock’s influences on other musics Another is to attempt a kind of cultural audit
- Clay | Definition, Formation, Properties, Uses, Facts - Britannica
Clay, soil particles the diameters of which are less than 0 005 millimeter; also a rock that is composed essentially of clay particles Rock in this sense includes soils, ceramic clays, clay shales, mudstones, glacial clays, and deep-sea clays
- Rock Hudson | Biography, Movies, AIDS, TV Shows, Death, Facts . . .
Rock Hudson, American actor noted for his good looks and movie roles during the 1950s and ’60s, including Magnificent Obsession, Giant, and Pillow Talk, and for the TV series MacMillan and Wife in the 1970s He was one of the first known Hollywood celebrities to die of AIDS-related complications
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