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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.
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.
Boneyard Creek is a 3.3-mile-long (5.3 km) [2] waterway that drains much of the cities of Champaign and Urbana, Illinois, United States. [3] It is a tributary of the Saline Branch of the Salt Fork Vermilion River , which is a tributary of the south-flowing Vermilion River and the Wabash River .
Ordovician rocks in Illinois are divided into three series, each separated by an unconformity; from oldest to youngest, these are the Canadian, Champlainian, and Cincinnatian series. Ordovician features in Illinois include the now-buried Glasford Structure in Peoria County , a crater caused by a meteorite impact roughly 455 million years ago.
Belknap, IL resident W. Marshall stated that the Cache River Basin was “good country for men and dogs, but powerful trying on women and oxen.” [6] Between 1810 and 1890 timber harvesting became a major industry in the Cache basin, Cypress wood was sought for its lightness and water-resistant properties. The small towns on the edge of the ...
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.
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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.