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Genesee River : ウィキペディア英語版 | Genesee River The Genesee River is a tributary of Lake Ontario flowing northward through the Twin Tiers of Pennsylvania and New York in the United States. The river provided the original power for the Rochester area's 19th century mills and still provides hydroelectric power for downtown Rochester. ==Geology== The Genesee is the remaining western branch of a preglacial system, with rock layers tilted an average of per mile. It begins in the Allegheny Plateau conglomerate, sandstone, and shale rocks of the Mississippian and Pennsylvanian subperiods. The river also often exposes older rocks such as shales (some rich in hydrocarbons), siltstones and some limestones of the Devonian period at Letchworth and, at a canyon with three more Niagara Escarpment waterfalls at Rochester, limestones and shales of Silurian age.
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「Genesee River」の詳細全文を読む
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