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This collection comprises volumes 111-117 of the 'Bulletin - United States Geological Survey,' offering a detailed record of geological investigations, findings, and research conducted by the U.S. Geological Survey. Spanning a range of topics within earth sciences, these bulletins provide invaluable insights into the geological composition, hydrological processes, and geophysical characteristics of various regions within the United States. Researchers, students, and professionals in geology, environmental science, and related fields will find this compilation an essential resource. The bulletins offer a historical perspective on the evolution of geological understanding and methodologies, highlighting significant discoveries and ongoing research efforts. They document the Survey’s commitment to studying and documenting the nation’s natural resources and geological landscape.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
