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Rise at Orangeville : ウィキペディア英語版 | Rise at Orangeville
Orangeville Rise is the second largest spring in the U.S. state of Indiana, in Orange County near Orangeville. It was designated a National Natural Landmark in June 1972.〔(【引用サイトリンク】url=http://www.nature.nps.gov/nnl/site.cfm?Site=RIOR-IN )〕 It is owned and managed by The Nature Conservancy and the Indiana Karst Conservancy.〔(【引用サイトリンク】url=http://ikc.caves.org/o-rise/rise.htm )〕 ==Geology== Contrary to popular belief, the spring is not a rise of the Lost River which actually surfaces approximately south of Orangeville. Water emerging at Orangeville Rise comes from approximately of the highly karstified Mitchell Plain to the northeast. The spring fluctuates wildly in response to drought and rain events, with storm discharge appearing less than 24 hours following an event.
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「Rise at Orangeville」の詳細全文を読む
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