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The earliest Carboniferous rocks sit conformably on top of the youngest Devonian in Illinois; Carboniferous rocks in the state are areally extensive, regionally very well-exposed, and form a large percentage of the state's bedrock. Illinois remained marine for much of the Carboniferous, with limestones making up most of the rock deposited ...
It exists in Missouri, Wisconsin, Iowa, Illinois, and Indiana. It is equivalent to the all but the basal formations of the Cincinnati Group in Ohio. Illinois and Indiana are the only states where the Maquoketa is considered a group. In other states it is a formation. The Maquoketa was deposited in a shallow intercontinental sea.
[3] Landmark name Image Location County Culture Comments; 1: Albany Mounds Site: Albany: Albany Mounds Trail 4]: Whiteside: Middle Woodland: Hopewell: 2: Alton Military Prison Site: Alton: inside the block bounded by Broadway and William, 4th, and Mill Sts. 5]: Madison: Euro-American: 3: Apple River Fort Site: Elizabeth: 0.25 miles east-southeast of the junction of Myrtle and Illinois Sts. 6 ...
This is a list of minerals which have Wikipedia articles. Minerals are distinguished by various chemical and physical properties. Differences in chemical composition and crystal structure distinguish the various species .
Location of Sangamon County in Illinois. This is a list of the National Register of Historic Places listings in Sangamon County, Illinois. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Sangamon County, Illinois, United States. Latitude and longitude coordinates are provided ...
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List of minerals recognized by the International Mineralogical Association; ... List of U.S. state minerals, rocks, stones and gemstones ... Code of Conduct;
This list of the prehistoric life of Illinois contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Illinois. Precambrian [ edit ]