maar Archives - Alaska Native News

Volcanoes, Permafrost, Earthquakes Shape Alaska

By Ned Rozell | Geophysical Institute on Jul 16, 2019 Featured, The Arctic and Alaska Science

Forty-one volcanoes that have erupted since the 1700s. Eleven percent of the world’s earthquakes. Glaciers of an ever-changing number that probably tops 100,000. Alaska has its share of superlatives, and here’s another one — Alaska has the largest maar on Earth. What’s a maar? It looks a lot like a lake, it’s circular and […]

The Continued Mystery of the Denali Gap

By Ned Rozell | Geophysical Institute on Feb 11, 2015 Featured, The Arctic and Alaska Science

North America’s highest mountain should be a volcano. Denali sits about 60 miles above where the Pacific Plate grinds beneath the North American plate, as do Iliamna, Redoubt and Augustine. If you draw a line from the Aleutians to volcanic features in interior Alaska, the curve goes over Denali’s summit. Like its neighbors in the […]