Plate Tectonics is a theory developed in the late 1960s, to explain how the outer layers of the Earth move and deform. The theory has caused a revolution in the way we think about the Earth. Since the development of the theory, geologists have had to reexamine almost every aspect of Geology. Plate tectonics has proven to be so useful that it can predict geologic events and explain almost all aspects of what we see on the Earth.
Steubenville is a city in and the county seat of Jefferson County, Ohio, United States. Located along the Ohio River, it had a population of 18,659 at the 2010 census.
The county has a total area of 625 square miles. It is the only square county in the entire State of Ohio with each side being approximately 25 miles. Trumbull County consists of seven cities: Cortland, Girard, Hubbard, Newton Falls, Niles, Warren, Youngstown and five villages: Lordstown, McDonald, Orangeville, West Farmington, and Yankee Lake. In the downtown area you will find unique shopping boutiques, jewelers and a variety of restaurants.