TEXTBOOK OF GEOGRAPHY BY A.W. ANDREWS [HARDCOVER]

Excerpt from A d104-Book of Geography Slow Movements - Elevation and Subsidence. - As the earth is slowly radiating its heat (secular cooling) into space, the interior contracts, and the solid but elastic crust wrinkles, and movements of different kinds are set up. The most conspicuous movements are those which occur in the course of mountain building, where folds and fractures are produced through stresses acting on the earth's crust. To these must be added the less marked movements which result from a subsidence of the crust or a rise of the sea in consequence of the sediment deposited in it (positive movements), or from a lowering of the sea-level in consequence of a subsidence of the ocean floor (negative movements). These movements are gener ally called elevation and subsidence, and may be considered with reference to the land without regarding the question of changes in the sea-level. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.