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A Hike into the Sandy River Canyon

This one-day field trip was a hike into the eastern terrace of the Sandy River Canyon, and was led by Ian Madin, retired Senior Scientist from Oregon Department of Geology and Mineral Industries. The target geology was the material deposited between 16 and 2 million years ago (Ma) above the Columbia River Basalt which underlies the Portland basin.

2026 Downtown Portland Building Stone Field Trip - South Tour

GSOC revisited Portland downtown buildings this summer by going on the Building Stone South Tour for the first time in three years. GSOC Communications Director Paul Edison-Lahm and GSOC President Julian Gray led two small groups through the sidewalks of downtown Portland on the tour. Beautiful weather made the experience a very pleasant one.