USGS/Cascades Volcano Observatory, Vancouver, Washington

REPORT:
Guides to Some Volcanic Terranes in Washington, Idaho, Oregon, and Northern California

-- David A. Johnston and Julie Donnelly-Nolan, (eds.), 1981,
Guides to Some Volcanic Terranes in Washington, Idaho, Oregon, and Northern California: U.S. Geological Survey Circular 838, 189p., Preface by Julie Donnelly-Nolan

Preface

This guidebook arose out of a series of field trips held in conjunction with the Pacific Northwest American Geophysical Union meeting held in Bend, Oregon, September 1979. The PNAGU meeting included special volcanology sessions planned by William I Rose, Jr., Bruce A. Nolf, and David A. Johnston. Publication of the guidebook volume was originally planned for early 1980 by the Oregon Department of Geology and Mineral Industries (DOGAMI). Inevitable delays, subsequent scheduling problems, and the death of Dave Johnston in the May 18 eruption of Mount St. Helens led to this publication as a USGS Circular.

This circular differs from typical U.S. Geological Survey compilations in that not all these papers have been examined by the Geologic Names Committee of the Survey. This Committee is charged with ensuring consistent usage of formational ad other stratigraphic names in the U.S. Geological Survey publications. Because many of the contributions are from workers outside the Survey, review by the Geologic Names Committee would have been inappropriate. Each author provided camera-ready pages, and the articles have not been edited for uniformity of style or usage.

The contributions are generally ordered so as to describe the areas from north to south. Typically, the roadlog comes after the descriptive article except in the case of the Medicine Lake Highland articles, for which the roadlog is first and several contributions follow.

I wish to thank Wes Hildreth for responding so quickly to my request for a memorial to Dave Johnston. Also, by thanks go the Beverly Vogt of DOGAMI for her help with the publication.

Most of all, we owe special posthumous thanks to Dave Johnston for conceiving the field-trip ideas, overseeing the planning and arrangements for the trips and maintaining his sense of humor in spite of the last-minute airline strike, and reminding us gently but firmly to produce the promised articles.

Julie Donnelly-Nolan

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03/26/01, Lyn Topinka

REPORT: Guides to Some Volcanic Terranes in Washington, Idaho, Oregon, and Northern California

Preface

REPORT:
Guides to Some Volcanic Terranes in Washington, Idaho, Oregon, and Northern California