COGS is a Central Oregon-based non-profit organization promoting a greater awareness and understanding of the geological sciences through technical presentations, educational outreach to schools, and field trips


Upcoming Presentation


Tuesday, March 23 

William Hawley, Lamont-Doherty Earth Observatory

The fragmented death of the Farallon Plate

Could volcanism in central Oregon be linked to a hole in the subducting plate beneath North America? In this presentation William Hawley from the Lamont-Doherty Earth Observatory will discuss evidence for tearing of the subducting plate as it descends into the mantle beneath central Oregon and the impacts this has on surface processes, including volcanism and earthquakes in Oregon.

Scientific American article: We Could Be Witnessing the Death of a Tectonic Plate

National Geographic article: A tectonic plate is dying under Oregon. Here’s why that matters



Recent Presentations

click HERE for the recorded Presentation 

Tuesday February 23rd

Anders Eskil Carlson, President and Chief Scientist, Oregon Glaciers Institute

Our Vanishing Glaciers, Part II



Click HERE for MORE Past Presentations



Geoscience Events & Activities by Others

March 5 & 6th

Oregon Society of Soil Scientists
Winter Virtual Meeting

March 6, 2021

Exhibition Opening: “Cosmic Microscapes: Seeing into Rocks from Oregon and Space”

This exhibition blends art and science to reveal the breathtaking beauty of meteorites—rocks from space!

Friday March 12th Zoom Lecture

Carrie Gordon

Exploring the Crooked River Caldera


March 30 @ 5:30 pm - 7:00 pm

The Geological Journey of Desert Rivers

Dr. Elizabeth Safran

Associate Professor of Geological Science at Lewis & Clark

Follow the course of Oregon’s wild rivers as they journey through the lively geology of the high desert, and learn about how the geologic history of eastern Oregon – from landslides to lava flows – has interacted with and influenced beloved desert waterways like the Owyhee River. 


Starting January 26th and continuing through March 9th