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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.
The Kincaid Mounds Historic Site (11MX2-11; 11PO2-10) [3] c. 1050–1400 CE, [4] is a Mississippian culture archaeological site located at the southern tip of present-day U.S. state of Illinois, along the Ohio River.
A map showing approximate areas of various Mississippian and related cultures. The Koster Site is located near the center of this map in the upper part of the Middle Mississippi area. The Koster Site is a prehistoric archaeological site located south of Eldred, Illinois. The site covers more than 3 acres and extends 30 feet down into the ...
This is a list of archaeological sites on the National Register of Historic Places in Illinois. Historic sites in the United States qualify to be listed on the National Register of Historic Places by passing one or more of four different criteria; Criterion D permits the inclusion of proven and potential archaeological sites . [ 1 ]
The Dickson Mounds Museum is a museum erected on the site in 1972 by the U.S. state of Illinois; it describes the life cycles and culture of Native Americans living in the Illinois River valley over a period of 12,000 years since the last ice age. The museum is part of the Illinois State Museum system. [5]
The Shawnee Hills are a region within the larger Interior Low Plateaus physiographic province located in southern Illinois, southern Indiana, and western Kentucky. [1] In Illinois it rests mainly in an east–west arc roughly following the outline of the southern end of the Illinois Basin .
The Illinois Salines, also known as the Saline Springs or Great Salt Springs, is a salt spring site located along the Saline River in Gallatin County, Illinois.The site was a source of salt for Illinois' prehistoric settlers and is now an archaeological site with a large quantity of organic remains.
Basalt fiber is made from a single material, crushed basalt, from a carefully chosen quarry source. [1] Basalt of high acidity (over 46% silica content [2]) and low iron content is considered desirable for fiber production. [3] Unlike with other composites, such as glass fiber, essentially no materials are added during its production.
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