SALT LAKE CITY – University of Utah seismologists discovered and made images of a reservoir of hot, partly molten rock 12 to 28 miles beneath the Yellowstone supervolcano, and it is 4.4 times larger than the shallower, long-known magma chamber. The hot rock in the newly discovered, deeper magma reservoir would fill the 1,000-cubic-mile Grand […]
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 […]
Augustine Volcano sits alone, a 4,000-foot pyramid on its own island in Cook Inlet. Like many volcanoes, it has a tendency to become top heavy. When gravity acts on Augustine’s oversteepened dome, rockslides spill into the ocean. A scientist recently found new evidence for an Augustine-generated tsunami from a time when Egyptian pharaohs built their […]
The five-day eruption of Pavlof, on the left flank of the bay with the same name in the Aleutians, has ramped down and is now been downgraded to “orange” after one day being at “red” as of Sunday. On Saturday, the activity at the volcano escalated quickly with a plume of ash that ascended to […]