. . "Plate tectonics (from the Late Latin tectonicus, from the Greek: \u03C4\u03B5\u03BA\u03C4\u03BF\u03BD\u03B9\u03BA\u03CC\u03C2 \"pertaining to building\") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model builds on the concept of continental drift which was developed during the first few decades of the 20th century."@en . . .