New atlas maps Alaska’s surface

What’s in the dirt in Alaska?
The colorful Polychrome Mountains emerge from the clouds on July 22, 2016, in Denali National Park. The mountains get their color from volcanic rock. The U.S. Geological Survey released the first updated geochemical atlas of Alaska in nearly 40 years. (Photo by Rashah McChesney, KTOO – Juneau)Federal and state researchers teamed up to make it easier for everyone to find out. For the first time in nearly 40 years, Alaska has an updated atlas of the chemic