Continental drift is created at spreading centers, and this, along with subduction, drives the system of plates in a chaotic manner, resulting in continuous orogeny and areas of isostatic imbalance. The theory of plate tectonics explains all this, including the movement of the continents, better than Wegener's theory. Hans Stille and Leopold Kober opposed the idea of continental drift and worked on a "fixist" geosyncline model with Earth contraction playing a key role in the formation of orogens. Other geologists who opposed continental drift were Bailey Willis, Charles Schuchert, Rollin Chamberlin and Walther Bucher. In 1939 an international geological conference was held
Ice Age: Continental Drift Ice Age: Continental Drift Ice Age: Continental Drift is a 2012 American 3D computer-animated adventure comedy film produced by Blue Sky Studios and distributed by 20th Century Fox. It is the fourth installment of the "Ice Age" series and the sequel to "" (2009). The film was directed by Steve Martino and Michael Thurmeier from a script by Michael Berg and Jason Fuchs, and stars the voices of Ray Romano, John Leguizamo, Denis Leary, Queen Latifah, Seann William Scott, Josh Peck, and Chris Wedge reprise their previous roles alongside Keke Palmer, Nicki Minaj, Drake, Jennifer Lopez, Josh Gad, and Peter