Geologic Setting of the John Day Country, Grant County, Oregon PDF Download
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Author: Thomas P. Thayer
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 28
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 24
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Author: Thomas P. Thayer
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 28
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Book Description
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 23
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Author: Thomas P. Thayer
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 23
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Author: Thomas Prence Thayer
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 23
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Author: United States Department Of Th Interior
Publisher: Forgotten Books
ISBN: 9780267852567
Category : Science
Languages : en
Pages : 26
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Excerpt from The Geologic Setting of the John Day Country: Grant County, Oregon Thomas Condon Viewpoint, John Day Fossil Beds State Park. From Picture Gorge to the cliffs opposite, the Picture Gorge Basalts and varicolored ash beds of the John Day Formation rise together nearly 2000 feet. The basalt that caps Sheep Rock is an erosional remnant. The lower beds in the John Day Formation are colored red by clay eroded from thick soil on the Clarno Forma tion, which is exposed in the farthest red hill. The soil was formed by tropical weathering some 30-35 million years ago, before the John Day Formation was laid down. Faulting on a small scale is illustrated in Sheep Rock, where the thick olive-drab ash flow in the middle of the John Day Formation is offset 75-100 feet (fig. The fault slopes about 45 eastward. About two miles down stream, large - scale movement on two faults has dropped the basalt flows in Middle Mountain 2000-2500 feet. One of the faults fol lows along the upstream base of Middle Mountain. Fig. 5. - North-south section along the John Day River through Picture Gorge and Middle Mountain. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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.
Author: Herbert G. Schlicker
Publisher:
ISBN:
Category : Engineering geology
Languages : en
Pages : 31
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Author: Christopher S. Alger
Publisher:
ISBN:
Category : Landslides
Languages : en
Pages : 130
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Author: Eugene P. Kiver
Publisher: John Wiley & Sons
ISBN: 9780471332183
Category : Science
Languages : en
Pages : 916
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A fascinating and accessible introduction to the principles of physical and historical geology. For the millions who visit them each year, U.S. national parklands offer a glittering spectacle of natural wonders. But beyond the spectacular scenery, these national treasures have a much bigger, more awe-inspiring tale to tell--a sprawling story of upheaval and transformation, involving forces and time-spans almost beyond imagining. The purpose of this book is to provide you with the knowledge you need to read and interpret that story, and to make visits to the parklands even more special. Requiring no prior familiarity with the geological sciences, this region-by-region exploration of the U.S. parklands teaches the principles of physical and historical geology by example. It begins with a general introduction to all important concepts, terms, and principles. In the chapters that follow, the authors take you on a tour through the geological regions of the United States. Beginning with Hawaii and the Pacific borderlands and moving progressively eastward to the Appalachian Mountains and the coastal plains of the East Coast, they provide you with a geologist's-eye view of the landforms, mountains, and bodies of water encountered in over 70 national parks and monuments, and tell the fascinating story of their evolution. Lavishly illustrated with nearly 300 stunning photographs and maps and featuring greatly expanded coverage of the geological story, history, and culture of U.S. parks and monuments, this new edition of Dr. David Harris's classic text is an ideal introduction to the principles of geology for students and nature enthusiasts alike.
Author: Terri A. Taylor
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 154
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