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 …
Rock | Definition, Characteristics, Formation, Cycle, Classification ...
Nov 25, 2025 · 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 …
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, …
Rock Music Portal | Britannica
Rock's origins lie in rock and roll, a new form of American popular music in the 1950s that was personified early on by Elvis Presley. Other successful rock singers, musicians, and groups include …
Rock Hill | City of Culture, Historic Sites & Parks | Britannica
Rock Hill, city, York county, northern South Carolina, U.S., near the Catawba River, 26 miles (42 km) south of Charlotte, North Carolina. Established in 1851 as a depot on the Charlotte and South …
Rock Island | Mississippi River, Quad Cities, Fort Armstrong | Britannica
Rock Island, city, seat (1833) of Rock Island county, northwestern Illinois, U.S. It lies on the Mississippi River (bridged to Iowa) at the mouth of the Rock River and opposite the island for which it was named.
Sedimentary rock - Deposition, Stratification, Weathering | Britannica
Dec 17, 2025 · Sedimentary rock - Deposition, Stratification, Weathering: The sedimentary environment is the specific depositional setting of a particular sedimentary rock and is unique in terms of physical, …
Rock and roll | History, Songs, Artists, & Facts | Britannica
Nov 21, 2025 · Rock and roll, style of popular music that originated in the United States in the mid-1950s and that evolved by the mid-1960s into the more encompassing international style known as rock …
Rock and Roll Hall of Fame and Museum - Encyclopedia Britannica
Nov 24, 2025 · rock and roll, style of popular music that originated in the United States in the mid-1950s and that evolved by the mid-1960s into the more encompassing international style known as rock …
Sedimentary rock | Definition, Formation, Examples, & Characteristics ...
Dec 17, 2025 · Sedimentary rock, rock formed at or near Earth’s surface by the accumulation and lithification of sediment or by the precipitation from solution at normal surface temperatures. …