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Boston College

(Encyclopedia)Boston College, main campus at Chestnut Hill, Mass.; coeducational; Jesuit; est. and opened 1863. Actually a university, the school's Chestnut Hill campus comprises colleges of arts and sciences and b...

metamorphic rocks

(Encyclopedia)metamorphic rocks: see rock.

Hooker, Richard

(Encyclopedia)Hooker, Richard, 1554?–1600, English theologian and clergyman of the Church of England. He studied and lectured at Oxford and preached at Drayton-Beauchamp, Buckinghamshire; at the Temple Church, Lo...

Suitland

(Encyclopedia)Suitland, uninc. city (1990 pop. 35,400 including Silver Hill), Prince Georges co., central Md., a suburb of Washington, D.C. The Suitland Federal Center houses offices of the U.S. Census Bureau, Nati...

Taiping

(Encyclopedia)Taiping tīpĭngˈ [key], city (1991 pop. 186,791), Perak, Malaysia, central Malay Peninsula. Once the leading tin-mining center of Malaya, it has been supplanted by the Kinta Valley. The city is pict...

Sedona

(Encyclopedia)Sedona, city (2010 pop. 10,031), Coconino and Yavapai co., N Ariz., 22 mi (35 km) SSW of Flagstaff on Oak Creek in the Coconino National Forest; est. 1902, inc. 1988. Tourism is Sedona's main industry...

stratigraphy

(Encyclopedia)stratigraphy, branch of geology specifically concerned with the arrangement of layered rocks (see stratification). Stratigraphy is based on the law of superposition, which states that in a normal sequ...

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...

Led Zeppelin

(Encyclopedia)Led Zeppelin, English pop music group formed in 1968 by guitarist Jimmy Page (1944–), singer Robert Plant (1948–), bassist John Paul Jones (1946–), and drummer John “Bonzo” Bonham (1948–80...

pyroclastic flow

(Encyclopedia)pyroclastic flow, turbulent, fluidized mixture of rock, volcanic ash, and hot gas that moves like an avalanche away from a volcanic eruption. A pyroclastic flow may contain a mix of rock fragments ran...