We cannot verify your location
Browse Book and Journal Content on Project MUSE
OR

Oregon Geology

Sixth Edition

Elizabeth L. Orr and William N. Orr

Publication Year: 2012

Because Oregon sits on the leading edge of a moving crustal plate, a striking diversity of geologic events have molded its topography. Over a century of study, a deeper understanding of the region’s tectonic overprint has emerged. In this timely update to the 2000 edition, Elizabeth and William Orr incorporate that new knowledge, addressing current environmental problems and detailing tectonic hazards. “Caught between converging crustal plates,” the Orrs write, “the Pacific Northwest faces a future of massive earthquakes and tsunamis.”

A comprehensive treatment of the state’s geologic history, Oregon Geology moves through Oregon’s regions to closely examine the unique geologic features of each, from the Blue Mountains to the Willamette Valley, from the high lava Plains to the Coast Range.

The book includes biographical sketches of notable geologists. It is lavishly illustrated and includes an extensive bibliography.

Published by: Oregon State University Press

Title Page, Copyright Page

pdf iconDownload PDF (445.4 KB)
 

Contents

pdf iconDownload PDF (428.1 KB)
pp. 5-

Relief map of Oregon

pdf iconDownload PDF (516.1 KB)
pp. 6-

read more

Preface

pdf iconDownload PDF (472.7 KB)
p. 7-7

In our periodic revisions of Oregon Geology, we are invariably challenged by the need to address new ideas and trends in research. Since the last edition in 2000, many revolutionary models and theories have been put forward, leaving us to select those which might have lasting..

read more

Acknowledgments

pdf iconDownload PDF (447.9 KB)
p. 8-8

Thanks to the many colleagues who reviewed all or portions of the text and diagrams, thus helping us to avoid errors: Cal Barnes,...

read more

Life on the Edge

pdf iconDownload PDF (802.7 KB)
pp. 9-17

Geology is the story of how the earth has evolved through time. Some processes such as volcanism, landslides, or earthquakes are sudden, highly visible, and catastrophic while erosion, deposition, or changing climates...

read more

Blue Mountains

pdf iconDownload PDF (2.1 MB)
pp. 18-47

The Blue Mountains physiographic province lies almost entirely in Oregon with only small portions projecting into southeast Washington and westcentral Idaho. Covering an area of 55,000 square miles, the triangular-shaped region is defined on the east by the...

read more

Klamath Mountains

pdf iconDownload PDF (1.8 MB)
pp. 48-75

The Klamath Mountains is an elongate northsouth trending physiographic province extending a distance of 250 miles from a narrow point near the southern tip of the Willamette Valley to the northern end of the Sacramento Valley in California. The Oregon Klamaths are...

read more

Basin and Range

pdf iconDownload PDF (1.4 MB)
pp. 76-95

The Basin and Range across southcentral Oregon is only a small northern portion of a vast region that covers parts of Utah, Nevada, Idaho, Oregon, Arizona, California, New Mexico, and Mexico, encompassing an area of 300,000 square miles. The Oregon Basin and...

read more

Owyhee Plateau

pdf iconDownload PDF (1.2 MB)
pp. 96-109

Covering the extreme southeastern corner of Oregon, the Owyhee physiographic province reaches into southwestern Idaho and northern Nevada. In Oregon, the plateau lies almost completely within Malheur County. It...

read more

High Lava Plains

pdf iconDownload PDF (1.7 MB)
pp. 110-129

The geologically young High Lava Plains is an elevated desert plateau 50 miles wide and 150 miles long. Centrally located in Oregon, it borders five other regions. The Blue Mountains lie to the north, the Basin an...

read more

Deschutes-Umatilla Plateau

pdf iconDownload PDF (1.6 MB)
pp. 130-153

The Deschutes-Umatilla province extends nearly 200 miles westward from the Blue Mountains to the Cascade Range and is 100 miles at its widest. The region slopes gently northward from elevations of 4,000 feet toward...

read more

Cascade Mountains

pdf iconDownload PDF (2.1 MB)
pp. 154-185

The 600-mile-long Cascade Mountains from northern California through Oregon, Washington, and British Columbia provide some of the Pacific Northwest’s most dramatic scenery. Touching all other provinces in Oregon except for the Blue Mountains...

read more

Willamette Valley

pdf iconDownload PDF (1.9 MB)
pp. 186-211

The Willamette Valley and Puget Sound lowland stretches from Cottage Grove, Oregon, to British Columbia in Canada. In Oregon, the Willamette Valley is an elongate basin which narrows at either end before pinching...

read more

Coast Range and Continental Margin

pdf iconDownload PDF (2.4 MB)
pp. 212-246

Moderately high mountains, terraces, rocky headlands, sandy beaches, and an offshore shelf and slope all contribute to the complex topography of the Coast Range and continental margin. From the Olympic Peninsula of Washington, the province continues southward...

References

pdf iconDownload PDF (868.9 KB)
pp. 247-288

Index

pdf iconDownload PDF (584.7 KB)
pp. 289-304


E-ISBN-13: 9780870716829
E-ISBN-10: 0870716824
Print-ISBN-13: 9780870716812
Print-ISBN-10: 0870716816

Page Count: 304
Publication Year: 2012