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Showing posts with the label geology

Orogeny and Erosion

We are camped in the national forest right on the route of the recently completed Leadville Trail 100 mountain bike race. The other day we rode a forest road up to the foot of Mt. Elbert, the tallest peak in Colorado. The most pleasant surprise was the marvelous, hard-packed, sandy texture of that particular forest road. I couldn't get the word ' orogeny ' out of my mind. What a beautiful word. It means mountain-building. Of course the opposite of orogeny is just as important. Erosion is one way to look at it. As detritus is swept down the side of a mountain, to the valley, the small stuff should drop out last, at lower altitude. Indeed we were benefiting from that today on the ride. The forest was a lodgepole pine monoculture. If ever a tree was aptly named, it is the lodgepole pine. The forest was as bland as you can imagine, but it wasn't as dark and depressing as a spruce/fir forest. When I stopped pedaling and held my breath, I could hear nothing--no