Orogenic belts and their shallow-soled fringes, the fold-thrust belts, are globally distributed in up to 20,000 km long mountain chains along the edges of the continents. Their locations, their geological origin in a mobile Earth, and their natural resources have drawn attention from the time of the Spanish and Portuguese global explorers to modernage geologists such as Emile Argand, Rein van Bemmelen, Albert Bally. Walter Bucher, Peter Coney, Augusto Gansser, A.M. Spencer, Hans Stille, Eduard Suess, and many others. Petroleum explorers have also accumulated and interpreted data from fold-thrust belts, but their collections have largely remained unpublished. The book is of interest to all geologists, resources engineers, technical consultants, and of course to the academic readership from all fields of the geosciences.