An Outline of the Structural Geology of the United States (Classic Reprint)

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Excerpt from An Outline of the Structural Geology of the United StatesThe strongly folded belt is long and sinuous and trends north east and southwest across the eastern United States. It lies on the site of a Paleozoic geosyncline. The belt swings in great curves around structural salients which face toward the north west (12, pp. 313 These salients appear to have been' the centers of most active deformation. The Appalachian region contains three salients or arcs, whose chords are each about 400 miles (640 kilometers) long. West of the Mississippi are two other salients of strongly arcuate plan. The Ouachita Mountains form the apex of one, and the mountains at Marathon, Texas, the other.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.