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  2. Geology of Illinois - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Illinois

    The geology of Illinois includes extensive deposits of marine sedimentary rocks from the Palaeozoic, as well as relatively minor contributions from the Mesozoic and Cenozoic. Ice age glaciation left a wealth of glacial topographic features throughout the state.

  3. Illinois Basin - Wikipedia

    en.wikipedia.org/wiki/Illinois_Basin

    The Illinois Basin is a Paleozoic depositional and structural basin in the United States, centered in and underlying most of the state of Illinois, and extending into southwestern Indiana and western Kentucky. The basin is elongate, extending approximately 400 miles (640 km) northwest-southeast, and 200 miles (320 km) southwest-northeast.

  4. Prairie Research Institute - Wikipedia

    en.wikipedia.org/wiki/Prairie_Research_Institute

    The Illinois State Geological Survey conducts basic and applied geological research, creates new geologic maps, and gathers and manages the state's geological data. [22] ISGS houses the legislatively mandated Illinois Geological Samples Library, a repository for drill-hole samples in Illinois, including cores drilled for mineral exploration and ...

  5. List of ecoregions in Illinois - Wikipedia

    en.wikipedia.org/wiki/List_of_ecoregions_in_Illinois

    Illinois' ecology is in a land area of 56,400 square miles (146,000 km 2); the state is 385 miles (620 km) long and 218 miles (351 km) wide and is located between latitude: 36.9540° to 42.4951° N, and longitude: 87.3840° to 91.4244° W, [1] with primarily a humid continental climate.

  6. The National Map - Wikipedia

    en.wikipedia.org/wiki/The_National_Map

    The National Map Corps consists of volunteers who devote some of their time to provide cartographic information to the U.S. Geological Survey. The only requirements to participate are having access to the Internet and a current familiarity with the area being mapped. [6] This data is used to update The National Map.

  7. Illinois lawmakers discuss bill prohibiting carbon capture ...

    www.aol.com/news/illinois-lawmakers-discuss-bill...

    An assessment from the Illinois Geological Survey noted the vulnerability of the aquifer, warning that carbon capture activities would need to be closely monitored to prevent environmental damage.

  8. Geography of Illinois - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Illinois

    Nearly the entire western boundary of Illinois is the Mississippi River, except for a few areas where the river has changed course. Illinois' southeastern and southern boundary is along the Wabash River and the Ohio River, whereas its northern boundary and much of its eastern boundary are straight survey (longitudinal and latitudinal) lines ...

  9. List of National Natural Landmarks in Illinois - Wikipedia

    en.wikipedia.org/wiki/List_of_National_Natural...

    The National Natural Landmarks (NNLs) in Illinois include 18 of the almost 600 such landmarks in the United States. They cover areas of geological, biological and historical importance, and include lakes, bogs, canyons and forests. Several of the sites provide habitat for rare or endangered plant and animal species.