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The Laurentide ice sheet (LIS) was a massive sheet of ice that covered millions of square miles, including most of Canada and a large portion of the Northern United States, multiple times during the Quaternary glaciation epochs, from 2.58 million years ago to the present.
The River's headwaters were near Blowing Rock, North Carolina; it then flowed through Virginia, West Virginia, Ohio, Indiana, and Illinois. (Hansen, 1995). [ 4 ] The largest tributary to the Teays River was the Old Kentucky River (Teller 1991), which extended from southern Kentucky through Frankfort and subsequently flowed northeast, meeting ...
The Defiance Moraine was deposited about 14,800 [1] years ago during the late Wisconsin glaciation and spans the northern portion of the state of Ohio from Defiance, Ohio in the west to near Pymatuning Reservoir in the east. [2] Near Defiance, Ohio inundation by Lake Maumee significantly reduced the relief of the moraine. [3]
Till plains are an extensive flat plain of glacial till that forms when a sheet of ice becomes detached from the main body of a glacier and melts in place, depositing the sediments it carried. Ground moraines are formed with melts out of the glacier in irregular heaps, forming rolling hills.
The inner border is less than 15 miles (24 km) and at its closest approach is only about 6 miles (9.7 km) from Lake Michigan. The system is from 5 miles (8.0 km) or 6 miles (9.7 km) up to nearly [6] 20 miles (32 km). It is narrowest in LaPorte County, Indiana and widest in Lake County, Indiana. [7]
The river's path traveled through modern-day West Virginia, Kentucky, Ohio, Indiana, and Illinois, finally emptying into the Gulf of Mexico, which at the time extended to southern Illinois. The glaciers of the Ice Age soon began to block the Teays, effectively damming the river and forming Lake Tight, near what is now Chillicothe, Ohio.
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Sheriden Cave is a Paleo-Indian archaeological site from the late Ice age in Wyandot County, Ohio. [1] Glacial deposits sealed off the cave more than 10,000 years ago. Sheriden Cave is a karst sinkhole on a dolomite ridge that crosses Hancock and Wyandot Counties. It is associated with the Indian Trail Caverns that opened in 1927.