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

Table of Contents

• Preface
  -- by Julie Donnelly-Nolan

• David Alexander Johnston

• Guide to geologic field trip between Lewiston, Idaho, and Kimberly, Oregon, emphasizing the Columbia River Basalt Group
  -- D. A. Swanson and T. L Wright

• Roadlog for geologic field trip between Lewiston, Idaho, and Kimberly, Oregon.
  -- D. A. Swanson, and T. L. Wright

• Guide to geologic field trip between Kimberly and Bend, Oregon, with emphasis on the John Day Formation.
  -- P. T. Robinson, and G. F. Brem

• Roadlog for geologic field trip between Kimberly and Bend, Oregon, with emphasis on the John Day Formation.
  -- P. T. Robinson

• Central High Cascade roadside geology.
  -- E. M. Taylor

• Roadlog for Central High Cascade geology, Bend, Sisters, McKenzie Pass, and Santiam pass, Oregon.
  -- E. M. Taylor

• Newberry Volcano, Oregon.
  -- N. S. MacLeod, D. R. Sherrod, L. A. Chitwood, and E. H. McKee

• Roadlog for Newberry Volcano, Oregon.
  -- N. S. MacLeod, D. R. Sherrod, L. A. Chitwood, and E. H. McKee

• High Lava Plains, Brothers fault zone to Harney Basin, Oregon.
  -- G. W. Walker and B. Nolf

• Roadlog for High Lava Plains, Brothers fault zone to Harney Basin, Oregon.
  -- G. W. Walker and B. Nolf

• A field trip to the maar volcanoes of the Fort Rock-Christmas Lake Valley basin, Oregon.
  -- G. H. Heiken, R. V. Fisher, and N. V. Peterson

• Roadlog for field trip to Medicine Lake Highland.
  -- J. M. Donnelly-Nolan, E. V. Ciancanelli, J. C. Eichelberger, J. H. Fink, and G. Heiken

• Captain Jack's Stronghold (The geologic events that created a natural fortress).
  -- A. C. Waters

• Pre-Holocene silicic volcanism on the northern and western margins of the Medicine Lake Highland, California.
  -- S. A. Mertzman

• Surface structure of Little Glass Mountain.
  -- J. A. Fink

• Holocene plinian tephra deposits of the Medicine Lake Highland, California.
  -- G. Heiken

• Mechanism of magma mixing at Glass Mountain, Medicine Lake Highland volcano, California.
  -- J. C. Eichelberger

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