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Mahomet Aquifer : ウィキペディア英語版 | Mahomet Aquifer The Mahomet Aquifer is the most important aquifer in east-central Illinois. The sand and gravel aquifer is part of the buried Mahomet Bedrock Valley. It underlies 15 counties and ranges from 50 to 200 feet (15 to 60 m) thick. It supplies over per day of groundwater for public water use, industrial supply, and irrigation. == Hydrogeologic setting ==
The Mahomet Aquifer consists of sand and gravel deposited by glacial meltwater flowing westward along the Mahomet Bedrock Valley during the pre-Illinois glacial episode. This bedrock valley forms the western part of the Teays-Mahomet Bedrock Valley System that extends into Illinois from Indiana (Larson et al., 2003). Most of the sand and gravel of the Mahomet Aquifer is from the lower half of the Banner Formation and belongs to the Mahomet Sand Member which is buried 100 to 200 feet (30 to 60 m) below the ground surface.
The aquifer underlies 1.26 million acres (5,100 km²) of land in east-central Illinois and spans 15 counties (Panno and Korab, 2000). The Mahomet ranges from four to fifteen miles (24 km) wide (6 to 24 km) and 50 to 200 feet (15 to 60 m) thick, although the average thickness is 100 feet (30 m). The aquifer is confined except in Mason, Menard, and Tazewell Counties in the west near the Illinois River.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Mahomet Aquifer」の詳細全文を読む
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