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Dylan, Bob

(Encyclopedia) Dylan, BobDylan, Bobdĭlˈən [key], 1941–, American singer and composer, b. Duluth, Minn., as Robert Zimmerman. Dylan learned guitar at the age of 10 and autoharp and harmonica at 15.…

granite

(Encyclopedia) granite, coarse-grained igneous rock of even texture and light color, composed chiefly of quartz and feldspars. It usually contains small quantities of mica or hornblende, and minor…

petrology

(Encyclopedia) petrology, branch of geology specifically concerned with the origin, composition, structure, and properties of rocks, primarily igneous and metamorphic, and secondarily sedimentary. It…

auk

(Encyclopedia) aukaukôk [key], common name for a member of the family Alcidae (alcid family), swimming and diving birds of the N Atlantic and Pacific, which includes the guillemots and puffins. Their…

Blitzstein, Marc

(Encyclopedia) Blitzstein, Marc (Marcus Samuel Blitzstein), 1905–64, American composer, pianist, and librettist, b. Philadelphia. After attending the Univ. of Pennsylvania and the Curtis Institute of…

quarrying

(Encyclopedia) quarrying, open, or surface, excavation of rock used for various purposes, including construction, ornamentation, road building, and as an industrial raw material. Rock that has been…

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…