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Mount Rainier - Geologic hazards, geomorphology and engineering geology

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Author(s): Patrick T. Pringle, James W. Vallance, Christopher S. Magirl, Scott R. Beason, Greg C. Burtchard, Paul M. Kennard, Jody Woodcock, Patricia Reed

Document Type: Field Trip Guide #1
Publisher: Field guide volume for the Association of Engineering and Environmental Geoscientists 2013 Annual Meeting, Seattle WA
Published Year: 2013
DOI Identifier: 10.13140/RG.2.2.24553.90729
ISBN Identifier:

Our two-day field trip around Mount Rainier coincides with the 50th anniversary of the publication of the first detailed geologic maps of Mount Rainier by Fiske, Hobson, and Waters (1963) and the 40th anniversary of the first volcanic hazards map for Mount Rainier by US Geological Survey geologist Dwight "Rocky" Crandell (1973). Over the past few decades, the assessments of Mount Rainier’s geologic and geomorphic processes, history, and hazards have greatly refined our understanding of the volcano.

We will start off at Mud Mountain Dam, where we will have presentations about the dam, history of lahars from Mount Rainier at this location, and ongoing sediment transport and aggradation in downstream areas. Jody Woodcock, Interim Director of Pierce County Emergency Management, will brief us on volcanic hazard preparedness. We will then travel clockwise around Mount Rainier with stops to see exposures of lahar deposits such as that of the Osceola Mudflow and visit sites in Mount Rainier National Park and staying overnight in the southwest Cascade Range at Packwood, WA (Fig. 1).

On the second day we will journey into Mount Rainier National Park again via the Ohanapecosh Entrance and beautiful Stevens Canyon. There we will meet Mount Rainier National Park scientists who will give us presentations: Paul Kennard, Regional Geomorphologist, Scott Beason, Park Geologist, and Greg Burtchard, Park Archaeologist and Tribal relations Coordinator.

Many details of the geology en route can be found in Roadside Geology of Mount Rainier National Park and Vicinity (Pringle, 2008). Information on Day 1 routes can be found in Legs C, E, G, and C; Day 2 is covered in legs C, G, B, and A. We will make optional stops to see geologic features as time permits.

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Suggested Citations:
In Text Citation:
Pringle and others (2013) or (Pringle et al., 2013)

References Citation:
Pringle, P.T., J.W. Vallance, C.S. Magirl, S.R. Beason, G.C. Burtchard, P.M. Kennard, J. Woodcock, and P. Reed, 2013, Mount Rainier - Geologic hazards, geomorphology and engineering geology: Field Trip Guide #1, Field guide volume for the Association of Engineering and Environmental Geoscientists 2013 Annual Meeting, Seattle WA, doi: 10.13140/RG.2.2.24553.90729.