Continental Drift, Sea Floor Spreading and Plate Tectonics. Tectonic Theories. Tectonic theories attempt to explain why mountains, earthquakes, and volcanoes occur where they do, the ages of deformational events, and the ages and shapes of continents and ocean basins.
Sterling, Connecticut. Sterling is a town in Windham County, Connecticut, United States. The population was 3,099 at the 2000 census.
Abbot 27 monument in San Angelo, Texas. Sterling City is a city in and the county seat of Sterling County, Texas, United States. The population was 1,081 at the 2000 census, but had dropped to 982 by 2009. On May 25, 1955, 27 United States Air Force personnel, known as the Abbot 27, perished in an airplane crash near Sterling City.