Field guides provide history and context for your next field trip to Mount St. Helens

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  November 18, 2019

  Field trip guide to Mount St. Helens, Washington—Recent and ancient volcaniclastic processes and deposits

  This field guide explores volcanic effusions, sediments, and landforms at Mount St. Helens in Washington. A detailed synopsis outlines the eruptive history of Mount St. Helens from about 300,000 years ago through 1980 and beyond.The five days in the field include about 28 stops and 12 potential stops. Exposures in valleys surrounding Mount St. Helens reveal records of diverse Pleistocene and Holoc

  Authors

  Richard B. Waitt, Jon J. Major, Richard P. Hoblitt, Alexa R. Van Eaton, Michael A. Clynne

  By

  Volcano Hazards Program, Volcano Science Center

  August 29, 2018

  Geologic field-trip guide of volcaniclastic sediments from snow- and ice-capped volcanoes—Mount St. Helens, Washington, and Mount Hood, Oregon

  This field guide for the International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI) Scientific Assembly 2017 focuses on volcaniclastic sediments from Mount St. Helens in Washington and Mount Hood in Oregon. The trip spends four days in the field and includes nine stops at each volcano. For completeness, this guidebook also includes sixteen optional stops in the Mount S

  Authors

  Thomas C. Pierson, Lee Siebert, Christopher J. Harpel, Kevin M. Scott

  By

  Volcano Hazards Program, Volcano Science Center, Mount Hood

  August 2, 2017

  Field-trip guide to Mount St. Helens, Washington - An overview of the eruptive history and petrology, tephra deposits, 1980 pyroclastic density current deposits, and the crater

  This field trip will provide an introduction to several fascinating features of Mount St. Helens. The trip begins with a rigorous hike of about 15 km from the Johnston Ridge Observatory (9 km north-northeast of the crater vent), across the 1980 Pumice Plain, to Windy Ridge (3.6 km northeast of the crater vent) to examine features that document the dynamics and progressive emplacement of pyroclasti

  Authors

  John S. Pallister, Michael A. Clynne, Heather M. Wright, Alexa R. Van Eaton, James W. Vallance, David R. Sherrod, B. Peter Kokelaar

  By

  Volcano Hazards Program, Volcano Science Center

  July 5, 2017

  Field-trip guide for exploring pyroclastic density current deposits from the May 18, 1980, eruption of Mount St. Helens, Washington

  Pyroclastic density currents (PDCs) are one of the most dangerous phenomena associated with explosive volcanism. To help constrain damage potential, a combination of field studies, laboratory experiments, and numerical modeling are used to establish conditions that influence PDC dynamics and depositional processes, including runout distance. The objective of this field trip is to explore field rel

  Authors

  Brittany D. Brand, Nicholas Pollock, Damiano Sarocchi, Josef Dufek, Michael A. Clynne

  By

  Volcano Hazards Program, Volcano Science Center