Category: Event archives

2026-02-21 Chris Goldfinger – Cascadia and San Andreas Earthquakes: a link?

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The Lecture – Cascadia and San Andreas Earthquakes: a link?

The Quimper Geological Society welcomes back Chris Goldfinger to a ZOOM ONLY lecture on February 21, 2026. Chris has recently published an article in Geosphere and will join us to present new data showing a relationship between the Cascadia subduction zone and the northern San Andreas fault.

MORE INFORMATION will be posted soon.

Login for the ZOOM only lecture will be provided through email ten days and two days prior to the event (if you are registered as a member). Otherwise, the login will be posted later on this page.

About the Speaker

Dr. Chris Goldfinger, emeritus professor at Oregon State University (OSU), is a marine geologist and geophysicist with a focus on great earthquakes and structure of plate boundary fault zones around the world. Chris has been involved in over 45 oceanographic cruises over the last 30 years, using many geophysical tools (deep submersibles, sidescan sonar, seismic reflection, etc.). He is currently working on great subduction earthquakes along the Cascadia, NE Japan, the Caribbean, and Sumatran margins, as well as the northern San Andreas Fault, where he uses the evidence for earthquakes found in deep-sea sediments.

Chris received his PhD from OSU in 1994. He is a Fellow of GSA and was the recipient of the 2016 GSA Kirk Bryan Award for Quaternary Geology. Windsurfing in the Columbia River Gorge and aerobatic flying are some of his favorite sports, as well as sailing to the south Pacific Chris has temporarily landed in Fiji.

2025-12-06 David B. Williams – Exploring History and Nature in the City and beyond…

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The Lecture – Exploring History and Nature in the City (Seattle)

Quimper Geological Society welcomed back our friend David B. Williams, author, naturalist, and tour guide on December 6, 2025.

David B. Williams speaks about his two new books: Seattle Walks and Wild in Seattle. In his talk, David discusses how urban dwellers can get to know their city better by getting outside, walking, observing, and paying attention. He shares some of his adventures including birding at 60 mph, the pleasures and discoveries to be made by going back to the same location repeatedly, and how to date a 1100-year-old earthquake. This talk will appeal to newcomers, visitors, and longtime residents hopefully giving everyone new ways to appreciate Seattle, as well as inspire them with ways to connect with their hometown.

David will have some books available to purchase before and after the lecture.

About the speaker

David B. Williams is an author, naturalist, and tour guide whose award-winning book, Homewaters:  A Human and Natural History of Puget Sound is a deep exploration of the stories of this beautiful waterway. He is also the author of Too High and Too Steep: Reshaping Seattle’s Topography, Stories in Stone: Travels Through Urban Geology, as well as Seattle Walks: Discovering History and Nature in the City. Williams is a Curatorial Associate at the Burke Museum and writes a free weekly newsletter, the Street Smart Naturalist (https://streetsmartnaturalist.substack.com/ – by clicking the “No thanks” you may access the previous newsletters). More information about David’s books may be found at www.geologywriter.com

2025-09-13 Tom Badger – Hazards and Highways: Troubles for the NW Olympic Peninsula

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The Lecture 

Hazards and Highways: Troubles for the NW Olympic Peninsula

State Route 112 is the sole access road for the northwestern Olympic Peninsula and the remote communities situated along the Strait of Juan de Fuca, west of Port Angeles. Particularly unfavorable geology underlies the western half of this road and this, combined with steep topography and an exceptionally wet winter climate, make it one of the most landslide-afflicted highway corridors in the state. Landslides and lowland flooding impact travel most winters, causing short duration closures of one or both lanes and necessitating persistent maintenance efforts.  On a longer cycle of years to decades, major landslide events severely damage or destroy the highway at one or more locations, resulting in closures lasting three to six months or longer. Detour options are limited to nonexistent, so communities and local businesses suffer from these closures until highway repairs can be made or floodwaters recede. Low frequency-high consequence hazards such as earthquakes and tsunamis add to the risk profile and further complicate mitigation strategies.

This presentation summarizes the results of a planning-level study commissioned by the Washington State Department of Transportation (WSDOT) that examined the geologic and hydrologic hazards that threaten this highway, conducted a comprehensive risk analysis, and provided recommendations to improve its resiliency and reduce community impacts. The study, completed in 2023, enabled WSDOT to secure a 5-yr $30 million allocation from a NOAA Climate Resiliency grant in late 2024 to proceed with initial recommendations, which are expected to begin Spring 2025.

About the Speaker

Tom Badger

Happy to leave the Midwest flatlands behind in 1981, Tom completed his BS in geology in 1983 at WWU and his MS in geological engineering at the University of Nevada Reno in 2002. He is licensed in Washington as an engineering geologist, hydrogeologist, and civil engineer. Tom worked for WSDOT for 32 years, the last five serving as chief engineering geologist, before retiring in 2016. Tom specializes in the assessment and mitigation of slope hazards, soil and rock slope engineering, and risk management for transportation infrastructure. He has published and lectured extensively on these topics, and consults part-time for the Portland-based firm, Landslide Technology.