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Encyclopedia > Lake Chicago

The city of Chicago lies in a broad plain which, hundreds of millions of years ago, was a great interior basin covered by shallow seas. These seas divided North America from the Arctic Ocean to the Gulf of Mexico. Evidence of these seas are found in the fossils of coral, such as those unearthed in quarries at Stoney Island, Thornton and McCook, or at 18th Street and Damen; evidence is also found in the fossils in the Niagara limestone bedrock. Chicago (officially named the City of Chicago) is the third largest city in the United States (after New York City and Los Angeles), with an official population of 2,896,016, as of the 2000 census. ... World map showing North America A satellite composite image of North America. ... Gulf of Mexico in 3D perspective. ... A fossil Ammonite Fossils (from Latin fossus, literally having been dug up) are the mineralized or otherwise preserved remains or traces (such as footprints) of animals, plants, and other organisms. ... Orders Scleractinia Corals are gastrovascular marine cnidarians (phylum Cnidaria; class Anthozoa) existing as small sea anemone-like polyps, typically forming colonies of many individuals. ... This entry incorporates text from Eastons Bible Dictionary, 1897, with some modernisation. ...

Later, the polar ice-cap crept four times down across the continent, covering the region with ice to a depth of a mile or more. As the climate changed the ice melted. The last ice flow (the Wisconsin glacier) had an outlet through the Sag Valley and the Des Plaines River Valley around Mt. Forest, now the Palos. Mighty torrents of water poured through those valleys. As it retreated, it created Lake Chicago, ancestor of our Lake Michigan, then extending west to LaGrange and south beyond Homewood and Lansing. This article needs to be wikified. ... Sunset on Lake Michigan Lake Michigan is one of the five Great Lakes of North America. ... Lagrange may mean: Joseph Louis Lagrange, mathematician and mathematical physicist A Lagrange point in physics and astronomy The Lagrange_Multiplier mathematical technique Places in the United States: Lagrange, Georgia Lagrange, Indiana Lagrange, Maine Lagrange, New York (three places): Lagrange, Dutchess County Lagrange, Orange County Lagrange, Wyoming County Lagrange, Ohio Lagrange, Virginia... Homewood is the name of some places in the United States of America: Homewood, Alabama Homewood, California Homewood, Illinois Homewood, Pennsylvania Homewood is also the name of the main campus of the Johns Hopkins University in Baltimore, Maryland, and may also sometimes refer to the surrounding neighborhood; the name comes... Lansing is the name of several places in the United States of America: Lansing, Illinois Lansing, Kansas Lansing, Michigan Lansing (town), New York Lansing, North Carolina Lansing, Iowa Lansing is the name of several settlements: Lansing, a former settlement that is part of Toronto Lansing, West Virginia, north of Oak...

As the glacier retreated it found new outlets, finally at Niagara Falls and through the St. Lawrence River. Each new outlet caused Lake Chicago to drop -- first 20 feet, then 15 feet, finally another 20 feet. The outlet to the southwest dried up and the DesPlaines River, when in flood, overflowed into Lake Michigan. This article is about the geographical formation. ... For other uses, see Niagara Falls (disambiguation). ... The Saint Lawrence River (French fleuve Saint-Laurent) is a large west-to-east flowing river in the middle latitudes of North America, connecting the Great Lakes with the Atlantic Ocean. ...

At each of its three levels, Lake Chicago built up sand spits in its bays, beach lines and sand dunes. Trails and roads follow these beach lines or the ridges of the sand spits. Ridge Road from Homewood through Thornton and Lansing is one; Michigan City Road through Riverdale, Dolton and Calumet City is another; LaGrange Road is another; Riverside Drive in Riverside, Grosse Point Road, Carpenter Road and Ridge Avenue through Evanston are some others. Blue Island and Stoney Island were islands at successive levels of Lake Chicago. In geography, a bay or gulf is a collection of water that is surrounded by land on three sides. ... This article is about the sand formations, for other meanings see Dune (disambiguation) Mesquite Flat Dunes in Death Valley National Park In physical geography, a dune is a hill of sand built by eolian (wind-related) processes. ... A trail, in the most general sense, is any linear route for travel. ... Michigan City may refer to: Michigan City, Indiana Michigan City, North Dakota This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Riverdale is the name of several cities, towns, and neighborhoods. ... Dolton may refer to: Dolton, Illinois Dolton, South Dakota This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...

External Links

  • Forest Preserve District of Cook County
  • Oak Park - Ancient Lake Chicago & Continental Divide



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