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spring, in geology

(Encyclopedia) spring, in geology, natural flow of water from the ground or from rocks, representing an outlet for the water that has accumulated in permeable rock strata underground. Some of the…

Red Deer, river, Canada

(Encyclopedia) Red Deer, river, 385 mi (620 km) long, rising in the Rocky Mts. in Banff National Park, SW Alta., Canada, and flowing NE past Red Deer city, then SE and E across the plains to the…

Arctic Red River

(Encyclopedia) Arctic Red River, c.310 mi (500 km) long, rising in the Mackenzie Mts. of W Northwest Territories, Canada, and flowing generally NW to the Mackenzie River. At its mouth are a post of…

tourmaline

(Encyclopedia) tourmalinetourmalinet&oobreve;rˈməlĭn, –lēn [key], complex borosilicate mineral with varying amounts of aluminum, iron, magnesium, sodium, lithium, potassium, and sometimes other…

bone marrow

(Encyclopedia) bone marrow, soft tissue filling the spongy interiors of animal bones. Red marrow is the principal organ that forms blood cells in mammals, including humans (see blood). In children,…

Bowie, David

(Encyclopedia) Bowie, David, 1947–2016, British rock-and-roll singer and songwriter who successfully, merged rock, art, and fashion, b. London as David Robert Jones. After singing with five different…

well

(Encyclopedia) well, aperture in the earth's surface through which substances in a natural underground reservoir, such as water, gas, oil, salt, and sulfur, can flow or be pumped to the surface. In…

lionfish

(Encyclopedia) lionfish, common name for a genus (Pterois) of the family Scorpaenidae (see rockfish), comprising venomous subtropical marine fish native to the South Pacific, the Indian Ocean, and…

Rock Island County, IL Census Data

Illinois Rock Island County, Illinois People QuickFactsRock Island CountyIllinoisPopulation, 2005 estimate 147,80812,763,371Population, percent change, April 1, 2000 to July 1, 2005 -1.1%2.8%…