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
Drift Desert, Arizona Drift Desert, Arizona Drift Desert is a former ranch and steamboat landing on the Colorado River, now a ghost town, in La Paz County, Arizona. Drift Desert was a ranch with a woodyard landing for the George Alonzo Johnson's steamboats on the Colorado River. It was located 102 miles up river from Yuma, Arizona, 30 miles above California Camp and 29 miles below La Paz, in what was then Yuma County, Arizona. Drift Desert appears on the 1861 Geological Map No. 1. Prepared by J.S. Newberry, M.D. Geologist to the Expedition. Explorations and Surveys. War Department. Map No. 1. Rio