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In the Chicago area, the limestone underwent a further transformation into dolostone. Dolostone is the bedrock beneath Chicago's dense layer of clay and glacial debris. The world's second largest aggregate quarry, Thornton Quarry, exists just south of the city limits in the suburb of Thornton. The dolostone bedrock rises close to the ground ...
A map of the 77 community areas, broken down by purported regions. While the areas have official use and definition, the color groupings are unofficial, and such "regions" may be defined differently, grouped differently, or not be used at all. The city of Chicago is divided into 77 community areas for statistical and planning purposes.
CTA trains provide about 745,000 customer trips each day and serve 144 stations in Chicago, Evanston, Skokie, Wilmette, Rosemont, Forest Park, Oak Park, and Cicero. Chicago is one of the few cities in the United States that provides rapid transit service to two major airports.
This is a list of the fifty most populous metropolitan areas in South America as of 2015, the most recent year for which official census results, estimates or projections are available for every major metropolitan area in South America. All figures refer to mid-year populations.
This list includes the fifty largest cities in South America by population within city limits, based on the most recent official census results, estimates, or short-term projections available for all of these cities, which refer to mid-2020 populations, except for those of Chilean cities (2017) and Venezuelan cities (2015).
91st Street (South Chicago) † ME — South Chicago, Chicago: B June 2001: Replaced by South Chicago (93rd Street). [15] 99th Street–Longwood: RI — Longwood Manor, Chicago: C 1985 [14] Abbott's Platform: UP-N — North Chicago: G 1986 [14] Station only listed on timetables as a note on some North Chicago stop times. Brighton Park: HC ...
The Chicago "L" is a rapid transit system that serves the city of Chicago and seven of its surrounding suburbs. The system is operated by the Chicago Transit Authority (CTA). On an average weekday, 759,866 passengers ride the "L", [ 1 ] making it the second-busiest rapid transit system in the United States, behind the New York City Subway .