Ohio River (north of Powhatan Point, Ohio, USA) 3
(looking upstream; Ohio is on the left; West Virginia is on the right)
The Ohio River is one of North America's biggest rivers. Its course defines the southern borders of Ohio, Indiana, and Illinois. It defines the northwestern border of West Virginia and the northern border of Kentucky. The river stretches for almost 1,000 miles, from western Pennsylvania to southernmost Illinois, where it flows into the Mississippi River. The present course of the river formed during the Pliocene and Pleistocene (since about 3 million years ago). Much of the Ohio River's pathway was established during the Pleistocene Ice Age, as south-moving continental glaciers blocked a previously-existing, northwest-flowing river system called the Teays River. The course of one of the major tributaries of the former Teays River is part of the modern Ohio River Valley (a long stretch between West Virginia and Ohio).
The bedrock in the hills around the Ohio River at the locality shown above are Upper Pennsylvanian sedimentary rocks of the Monongahela Group and the lower Dunkard Group (shales, sandstones, coals, nonmarine limestones). Some Lower Permian rocks are present at the hilltops.
Locality: view from near the top of Narrows Run South Outcrop, a large roadcut on the western side of Rt. 7 (= Ohio side of the river), immediately south of Narrows Run, between the town of Powhatan Point, Ohio and Moundsville, West Virginia, USA
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