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Curtis Institute of Music

(Encyclopedia)Curtis Institute of Music, in Philadelphia; coeducational; founded 1924 by Mary Louise Curtis Bok (later married to Efrem Zimbalist) and named for her father, Cyrus Curtis. The institute operates enti...

Brooklyn Academy of Music

(Encyclopedia)Brooklyn Academy of Music, performing arts center located in the borough of Brooklyn, N.Y. and popularly known as BAM. Founded in 1859 and opened in 1861, it is the oldest such institution still in op...

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...

Shankar, Ravi

(Encyclopedia)Shankar, Ravi (Robindra Shankar Chowdhury), 1920–2012, Indian sitarist and composer, b. Varanasi. He was the first Indian instrumentalist to attain an international reputation and is credited with i...

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...

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...

Little Rock Central High School National Historic Site

(Encyclopedia)Little Rock Central High School National Historic Site: see National Parks and Monuments (table)national parks and monuments (table). ...

taconite

(Encyclopedia)taconite, low-grade iron ore, a flintlike rock usually containing less than 30% iron. Resistant to drilling and to the extraction of its contained metal, the rock was long considered worthless. Experi...

metamorphic rocks

(Encyclopedia)metamorphic rocks: see rock.

Diddley, Bo

(Encyclopedia)Diddley, Bo, 1928–2008, African-American singer, guitarist, and songwriter who was one of the founders of rock and roll, b. near McComb, Miss., as Otha Ellas Bates. He and his cousin, Gussie McDanie...