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This river may predate the break-up of western Gondwana as an extension of a proto-Congo river system, 200 Mya during the Jurassic. Ohio: 3~2.5 Mississippi River: Formed when the Laurentide Ice Sheet dammed the north flowing Teays River during the Pre-Illinoian glaciation. The drainage area of the Teays could no longer drain to the north, and ...
The Teays River / ˈ t eɪ z / [1] (pronounced taze) was a major preglacial river that drained much of the present Ohio River watershed, but took a more northerly downstream course. Traces of the Teays across northern Ohio and Indiana are represented by a network of river valleys.
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.
Over decades, they built what is the single largest earthwork enclosure complex in the Ohio River Valley. [6] The complex was one of hundreds of Native American ancient monuments identified and surveyed for the Smithsonian Institution in the mid-nineteenth century by Ephraim G. Squier and Edwin Hamilton Davis, from 1837 to 1847.
Lake Aitkin along the Mississippi River near Grand Rapids, Minnesota. [20] Lake Minnesota at the great bend in the Minnesota River at Mankato, Minnesota [20] Glacial Lake Baraboo, communicating with Glacial Lake Wisconsin here; Glacial Lake Grantsburg, draining through the St. Croix River, [20] Lake Oshkosh; 13,600 - YBP. [1] on the central ...
The Portsmouth Earthworks are a large prehistoric mound complex constructed by the Native American Adena and Ohio Hopewell cultures of eastern North America (100 BCE to 500 CE). [2] The site was one of the largest earthwork ceremonial centers constructed by the Hopewell and is located at the confluence of the Scioto and Ohio Rivers, in present ...
The ancient lake was similar in size to the current lake during glacial retreat, but for some period the eastern 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.
Prehistory of Ohio provides an overview of the activities that occurred prior to Ohio's recorded history. The ancient hunters, Paleo-Indians (13000 B.C. to 7000 B.C.), descended from humans that crossed the Bering Strait. There is evidence of Paleo-Indians in Ohio, who were hunter-gatherers that ranged
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