Geology of the Portland and Oregon Basin

The Portland Basin geology is an amazing story of floods of lava, rock, and ice. Retired attorney and educator Paul Edison-Lahm is Communications Director and Past-President of the Geological Society of the Oregon Country (GSOC) — the oldest collaboration of amateur and professional geologists in the Pacific Northwest. Paul has developed numerous Portland metro field trips with GSOC, which are the basis for this virtual presentation on the Portland Basin’s dramatic geological history.