NationMaster - Encyclopedia: Oolite

An oolite (egg stone) is a sedimentary rock formed from ooids, spherical grains composed of concentric layers. The name derives from the Hellenic word oiòn for egg. Strictly, oolites consist of ooids of diameter 0.25-2 mm: rocks composed of ooids larger than 2 mm are called pisolites. Oolite may mean: Oolite, a sedimentary rock texture. ... Image File history File links Size of this preview: 500 Ã— 444 pixelsFull resolution (500 Ã— 444 pixel, file size: 118 KB, MIME type: image/jpeg)Phosphatic ooids from Phosphoria formation, Montana. ... Image File history File links Size of this preview: 500 Ã— 444 pixelsFull resolution (500 Ã— 444 pixel, file size: 118 KB, MIME type: image/jpeg)Phosphatic ooids from Phosphoria formation, Montana. ... The Permian is a geologic period that extends from about 299. ... Two types of sedimentary rock: limey shale overlaid by limestone. ... In geology, ooids are small (< 2mm) calcium carbonate or iron coated grains that usually form on the sea floor. ... Greek ( IPA: or simply IPA: â€” Hellenic) has a documented history of 3,500 years, the longest of any single language in the Indo-European language family. ... In most birds and reptiles, an egg (Latin ovum) is the zygote, resulting from fertilization of the ovum. ... A pisolite is a sedimentary rock formed from ooids (spherical grains composed of concentric layers) of diameter greater than 2 mm, but typically 5-8 mm. ...

Composition

Ooids are most commonly composed of calcium carbonate (calcite or aragonite), but can be composed of phosphate, chert, dolomite or iron minerals, including hematite. Dolomitic and chert ooids are most likely the result of the replacement of the original texture in limestone. Oolitic hematite occurs at Red Mountain near Birmingham, Alabama along with oolitic limestone. Calcium carbonate is a chemical compound, with the chemical formula CaCO3. ... Doubly refracting Calcite from Iceberg claim, Dixon, New Mexico. ... Aragonite Aragonite is a polymorph of the mineral calcite, both having the chemical composition CaCO3. ... Chert Chert (IPA: ) is a fine-grained silica-rich cryptocrystalline sedimentary rock that may contain small fossils. ... Dolomite crystals from Touissite, Morocco Dolomite is the name of both a carbonate rock and a mineral consisting of calcium magnesium carbonate (formula: CaMg(CO3)2) found in crystals. ... For other uses, see Iron (disambiguation). ... Hematite, also spelled haematite, is the mineral form of Iron(III) oxide, (Fe2O3), one of several iron oxides. ... Nickname: Location in Jefferson County in the state of Alabama Coordinates: , Country State County Jefferson, Shelby Government - Mayor Bernard Kincaid (D) Area - City 151. ...

Occurrence

Some exemplar oolitic limestone, a common term for an oolite, was formed in the United Kingdom during the Jurassic period, and forms the Cotswold Hills, the Isle of Portland, and part of the North Yorkshire Moors. A particular type, Bath Stone, gives the buildings of the World Heritage City of Bath, England their distinctive appearance. For other uses, see Limestone (disambiguation). ... The Jurassic Period is a major unit of the geologic timescale that extends from about 199. ... The Cotswolds are a range of hills in central England, sometimes called the heart of England, a hilly area reaching nearly 300 m or 1000 feet. ... The Isle of Portland is a long by wide limestone island in the English Channel. ... A View of the North York Moors The North York Moors (also known as the North Yorkshire Moors) is a national park in North Yorkshire, England. ... Bath Stone is an Oolitic Limestone comprising granular fragments of calcium carbonate. ... Elabana Falls is in Lamington National Park, part of the Central Eastern Rainforest Reserves World Heritage site in Queensland, Australia. ... Bath is a city in Somerset, England most famous for its baths fed by three hot springs. ... For other uses, see England (disambiguation). ...

This type of limestone is also found in Indiana in the United States. The town of Oolitic, Indiana was founded for the trade of limestone and bears its name. Quarries in Bedford, Oolitic, and Bloomington, Indiana contributed the materials for such iconic United States landmarks as the Empire State Building and the Pentagon. The Soldiers' and Sailors' Monument (Indianapolis) in downtown Indianapolis is built almost solely of grey oolitic limestone. Official language(s) English Capital Indianapolis Largest city Indianapolis Area Ranked 38th - Total 36,418 sq mi (94,321 kmÂ²) - Width 140 miles (225 km) - Length 270 miles (435 km) - % water 1. ... Oolitic is a town located in Lawrence County, Indiana. ... Bedford is a city in Lawrence County, Indiana, United States. ... Location in the state of Indiana Coordinates: County Monroe Mayor Mark Kruzan Area - City 51. ... The Empire State Building is a 102-story Art Deco skyscraper in New York City, New York on the intersection of Fifth Avenue and West 34th Street. ... This article is about the United States military building. ... Soldiers and Sailors Monument in 2005. ... The Indianapolis skyline Indianapolis is the capital of the U.S. state of Indiana. ...

The famous movie Breaking Away centers around the sons of quarry workers in Bloomington, the home of Indiana University. Almost all of the buildings on the Indiana University campus are built with native oolitic limestone material. Indiana University is the principal campus of the Indiana University system. ...

Occurrence

See also