Overview for geologic field-trip guides to Mount Mazama, Crater Lake Caldera, and Newberry Volcano, Oregon

Scientific Investigations Report 2017-5022- J
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Abstract

These field-trip guides were written for the occasion of the International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI) quadrennial scientific assembly in Portland, Oregon, in August 2017. The guide to Mount Mazama and Crater Lake caldera is an updated and expanded version of the guide (Bacon, 1989) for part of an earlier IAVCEI trip to the southern Cascade Range. The guide to Newberry Volcano describes the stops included in the 2017 field trip. Crater Lake and Newberry are the two best-preserved and most recent calderas in the Cascades Volcanic Arc. Although located in different settings in the arc, with Crater Lake on the arc axis and Newberry in the rear-arc, both volcanoes are located at the intersection of the arc and the northwest corner region of the extensional Basin and Range Province.

Suggested Citation

Bacon, C.R., Donnelly-Nolan, J.M., Jensen, R.A., and Wright, H.M., 2017, Overview for Geologic Field-Trip Guides to Mount Mazama, Crater Lake Caldera, and Newberry Volcano, Oregon: U.S. Geological Survey Scientific Investigations Report 2017–5022–J, 3 p., https://doi.org/10.3133/sir20175022J.

ISSN: 2328-0328 (online)

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Table of Contents

  • Preface
  • Contributing Authors
  • Overview for Geologic Field-Trip Guides to Mount Mazama, Crater Lake Caldera, and Newberry Volcano, Oregon
  • References Cited

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Overview for geologic field-trip guides to Mount Mazama, Crater Lake Caldera, and Newberry Volcano, Oregon
Series title Scientific Investigations Report
Series number 2017-5022
Chapter J
DOI 10.3133/sir20175022J
Year Published 2017
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Volcano Science Center
Description vii, 3 p.
Country United States
State Oregon
Online Only (Y/N) Y