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The Mazon River or Mazon Creek, is a tributary of the Illinois River in the United States. The confluence is near Morris, Illinois. The Mazon River is associated with the Mazon Creek fossils of the Francis Creek Shale, which are also exposed in strip mines and quarries near the River. This fossil bed includes well-preserved fossils from the Pennsylvanian period of the Paleozoic era and is a world-famous Lagerstätten site. The Illinois Department of Natural Resources (IDNR) has recently considered renaming the Mazon River. The IDNR believes that the frequent vandalism and theft of Mazon River signs is due to its current name being very similar to the well known Amazon River of South America. The Mazon River is approximately in length,〔U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. (The National Map ), accessed May 13, 2011〕 with the West Fork considered the main branch. The river was named in honor of William Mason, a pioneer settler. ==Cities and counties== The following cities, towns and villages are within the Mazon watershed: *Braidwood *Coal City *Dwight *Gardner *Mazon, Illinois The following counties are at least partly drained by the Mazon River: *Grundy County *Kankakee County *Livingston County *Will County 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「Mazon River」の詳細全文を読む スポンサード リンク
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