Registration now open.
Our four-day excursion will travel down the coast to Brookings and across to Grants Pass before returning via I-5. The emphasis will be on the complex geology of the Mesozoic accreted terranes of the Klamaths but on the way we will take a look at Tertiary terranes of the north coast and interactions of Columbia River Basalt flows with coastal sediments.
A One-day Field Trip
The Geological Society of the Oregon Country will host a one-day helicopter field trip of Mt. St. Helens. We will be based at Hoffstadt Bluffs Visitor Center (15000 Spirit Lake Hwy 504) on the North Fork of the Toutle River. The helicopter tour is approximately 40 minutes of spectacular scenery as you fly over both the devastated area from the 1980 eruption and the crater itself. An educational presentation by Sheila Alfsen will precede your tour so that you can recognize and interpret the landscape in light of the greatest volcanic event in recorded U.S. history.
The Hoffstadt Bluffs Visitor Center boasts a lounging area, a full restaurant and gift shop, a deck with a marvelous view and other educational features. The helicopter tours are offered by Hillsboro Aviation. You may learn more about them at www.mtsthelenshelicptortours.com.
Don’t book a tour individually, we will do it as a group as they have offered GSOC members a group discount. The tour will cost $257.40 per person, which includes taxes.
Please email Sheila and let her know of your interest as soon as possible, as the price is contingent on having the correct number of participants.
We can't get enough of exploring Downtown Portland Building Stone! If you missed our Spring tour or just want to see more interesting buildings, join us at 10:00 a.m. October 22nd for Ancient Walls 2 (North Tour). This field trip is open to public. Cost is $10.
Photos from our Latest Field Trip
Neogene Geology of the Eastern Columbia River Gorge
Most field trips require GSOC membership. Learn more about joining GSOC!
Dedicated to Pacific Northwest Geology since 1935
The Geological Society of the Oregon Country (GSOC) is a non-profit organization based in Portland, Oregon. The society is dedicated to the study of geology in the Pacific northwest and is open to persons with all levels of education and professional backgrounds.