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Early Lake Erie : ウィキペディア英語版
Early Lake Erie

Early Lake Erie was a prehistoric proglacial lake that existed at the end of the last ice age approximately 13,000 years ago. The early Erie fed waters to Glacial Lake Iroquois.
The ancient lake was similar in size to the current lake during glacial retreat, but for some period the western half of the lake was covered with ice.
Early-period Lake Erie was made up of smaller lakes (Lakes Warren, Wayne, Maumee and Lundy) with lower depths. Much of the ancient lake bed is now northern Ohio.
==Early (low) Stage==
12,000 years before present (YBP) the Laurentian ice sheet had melted to the east creating an outlet for the Lake Erie basin at the Niagara Escarpment. Simultaneously, the ice sheet had opened a drainage between Lake Algonquin and Lake Ontario thorough the Kirkfield Outlet. This ended the outflow from Lake Algonquin into the Lake Erie Basin. Holocene history of Lake Erie began with a flood of water over the Niagara Escarpment. The flood created a channel in the moraines and bedrock lower water level in the Erie basin.〔Forsyth 1973〕 The Niagara River Outlet, was over lower than the present level of Lake Erie〔Holcomb et.al. 2003; Lewis et.al. 2012〕 creating a non-glacial lake, called Early Lake Erie. At this stage water elevation was above sea level. The lake consisted of two lobes, one in the eastern basin and a smaller lake in the central basin.〔Research overview: Holocene development of Lake Erie; Charles E. Herdendorf; The Ohio Journal of Science, v112, n2 (2013), pgs 24-36〕

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