SISTERS, Ore. — The wind blew cold across the jagged lava-rock ridge as Cascade peaks rose into the sky in nearly every direction. North and Middle Sister were so close I could make out details of the ...

The birth of modern geology is said to have started in the 18th century. The introduction of new concepts and thoughts about the Earth was a brave thing to do. Why is that? Because the believeth of ...

What happens when you take 60 rocks from 15 different countries all around the world, capture 8,500 photographs of them and string them together into a three-minute stop motion video? The geology ...

I love the Grand Canyon, both personally (because of all the good memories I have of my adventures there), and as a scientist. I first saw it in the early summer of 1981 when I went on a six-week-long ...

I enjoyed reading the Times’ recent articles on the Roaring Fork River. The more we all know and understand our valley’s environment, the better we can appreciate and protect it. However, let’s keep ...

Bicyclists who take part in next month’s Cycling Scandia event will get a geology lesson in addition to a 15-mile workout. Geologist Dale Setterholm, who retired in February as associate director of ...

PHILOMATH, Ore. — Three miles up the Marys Peak Road, where the roadbed cuts through a ridge of dark volcanic rock, Bob Lillie is giving a geology lesson to a group of about 16 people. Clad in a ...

Sprawled on my stomach, I inched forward until my head hung over the rock edge of Legend Falls. The day was dry and hot, but as I looked down it was easy to picture a wild gush of water scraping an ...