Yellowstone's Obsidian Cliff: its amazing geologic story

Описание к видео Yellowstone's Obsidian Cliff: its amazing geologic story

Geology professor Shawn Willsey takes you up close and personal with the famous Obsidian Cliff in Yellowstone National Park. Learn more about how the silica-rich lava flow that formed this interesting rock.

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Shawn Willsey
College of Southern Idaho
315 Falls Avenue
Twin Falls, ID 83303

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