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porphyry, igneous rock

(Encyclopedia)porphyry pôrˈfərē [key], igneous rock composed of large, conspicuous crystals (phenocrysts) and a groundmass in which the phenocrysts are embedded. Some authorities consider the expression “porp...

Black Rock Desert

(Encyclopedia)Black Rock Desert, arid region of lava beds and alkali flats, NW Nev., in Toiyabe National Forest, stretching c.70 mi (110 km) NE from Gerlach. The Jackson Mts. rise to the east; the Black Rock Range ...

Rock Creek Park

(Encyclopedia)Rock Creek Park: see National Parks and Monuments (table)national parks and monuments (table). ...

Red Rock chicken

(Encyclopedia)Red Rock chicken, the only chicken still popular to any large extent in the United States today for both meat and eggs. It resulted from a cross between a Rhode Island Red male and a Plymouth Rock fem...

Steep Rock Lake

(Encyclopedia)Steep Rock Lake, 4 mi (6.4 km) long and 3 mi (4.8 km) wide, SW Ont., Canada, W of Lac des Mille Lacs. It is the site of important iron ore mining. Part of the lake was drained to facilitate the mining...

Lewis, Jerry Lee

(Encyclopedia)Lewis, Jerry Lee, 1935–2022, American singer and composer, b. Ferriday, La. Combining country music elements with an energetic performance style, he w...

Little Richard

(Encyclopedia)Little Richard, 1935–2020, American musician and singer, b. Macon, Ga., as Richard Wayne Penniman. One of the first rock musicians in the 1950s, he recorded such tunes as “Tutti Frutti,” “Long...

Holly, Buddy

(Encyclopedia)Holly, Buddy, 1936–59, American rock singer, songwriter, and guitarist, b. Lubbock, Tex., as Charles Hardin Holley. He performed country and western m...

electro-acoustic music

(Encyclopedia)electro-acoustic music: see electronic music. ...

drum, in music

(Encyclopedia)CE5 Drums drum, in music, percussion instrument, known in various forms and played throughout the world and throughout history. Essentially a drum is a frame over which one or more membranes or sk...