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rock salt
(Encyclopedia) rock salt: see sodium chloride.Rock Springs
(Encyclopedia) Rock Springs, city (1990 pop. 19,050), alt. c.6,270 ft (1,910 m), Sweetwater co., SW Wyo., on Bitter Creek; inc. 1888. It is a cattle and sheep shipping point and the center of large…rock temple
(Encyclopedia) rock temple: see temple.Rock Island, city, United States
(Encyclopedia) Rock Island, city (1990 pop. 40,552), seat of Rock Island co., NW Ill., on the Mississippi and Rock rivers, adjacent to Moline and opposite Davenport, Iowa; inc. 1841. These three…metamorphism
(Encyclopedia) metamorphism, in geology, process of change in the structure, texture, or composition of rocks caused by agents of heat, deforming pressure, shearing stress, hot, chemically active…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…Berry, Chuck
(Encyclopedia) Berry, Chuck (Charles Edward Anderson Berry), 1926–2017, American rock music guitarist, singer, and songwriter, b. San Jose, Calif. Berry is widely regarded as one of the leading…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…Trending
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