Willamette Valley Luncheon: Oso—The last 45, ....

Description :

The Willamette Valley Luncheon Committee is hosting its first ever virtual luncheon on July 1, from noon to 1 p.m. More information will be shared about the meeting link.

The presentation provides an interpretation of the late Pleistocene and Holocene periods at the site of the deadliest landslide in U.S. history—Oso, Washington on March 22, 2014. This history is developed from surficial observations and an ambitious subsurface exploration program involving 14 drilling locations, many with dual bore-hole installations.

The audience can follow the deposition of a more than 600-foot thick package of highly variable ice-age sediments at the site, followed by the removal of some of these sediments. The talk concludes with a time-sequence of the failure over the last +/- 13,000 years using the only pre- and post-failure balanced cross section developed to date, which is moreover consistent with the post-failure distribution of materials across the site.  

Gunnar Schlieder, the presenter and a native of Germany, holds a BS in Geology from the Technische Unversität München (Technical University of Munich), an MS degree in Geology from The George Wash-ington University, and a Ph.D. in Geology from Lehigh University.  He has been working as a geologic/geotechnical consultant in Eugene since 1989.  Since 1998, he has been president of GeoScience, specializing in slope stability investigations, landslide mitigation, debris flow risk assessments, and any other activities that involve playing in Western Oregon mud.

Event Date & Time:

7/1/2020  12:00 PM - 7/1/2020  1:00 PM

Venue :


Contact Person :

Brian Richardson
Email : brichardson@eugene-or.gov
Phone : (541) 221-7597
Company : City of Eugene
Title : Public Affairs Manager


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