Magma found beneath volcano-less country - Geophysical Institute
2024年1月25日 · The Buzzard Creek maars are two vegetated craters northeast of Healy. They formed when molten rock rose to the water table and blew up about 3,000 years ago. Geologists have found rocks around Buzzard Creek with the same chemical signature as Aleutian volcanoes.
Espenberg Maars - Geophysical Institute
Early inhabitants of the Seward Peninsula had several opportunities to see maars form. These maars were created on the low plain between Shishmaref and Cape Espenberg at the northeast tip of the Seward Peninsula, just across the sound …
Maar Formation - Geophysical Institute
2024年12月19日 · At first it was not obvious whether the new activity was the beginning of a volcano or a transient breaching of the surface that would eventually lead to the formation of water-filled pits called maars. Maars are found elsewhere in the world, including the north side of the Seward Peninsula, near Cape Espenberg.
The continued mystery of the Denali Gap - Geophysical Institute
Volcanologists recognize these as maars, craters that formed when molten rock reached the water table and detonated. This event happened about 3,000 years ago, when the Iron Age began and the world held 50 million people, few of them near Healy. Rocks at the Buzzard Creek maars have the same chemical signature of Aleutian volcanoes.
The Mystery of the Denali Gap | Geophysical Institute
2000年2月9日 · Located near Buzzard Creek north of Healy, the craters are among thousands in Alaska. Called maars, the craters are smallish volcanoes that form when molten rock reaches up from within the ground and detonates as it reaches the water table. The craters near Buzzard Creek are made up of the same stuff as the Aleutian Arc.
Volcanoes, permafrost, earthquakes shape Alaska
One hundred thousand glaciers, 41 volcanoes that have erupted since the 1700s, 11 percent of the world’s earthquakes: Alaska has its share of superlatives.
Maar or Meteorite Crater? - Geophysical Institute
Several maars are located on the Alaska Peninsula. On April 6, 1977, two of them erupted near the south shore of Lake Becharof, blasting huge clouds into the sky. Impressive as the display was, no human casualties resulted, and the students at Naknek High School named the new features Ukinrek, which means "two-holes-in-the-ground" in Yupik Eskimo.
Alaska’s water crop is a natural resource - Geophysical Institute
2022年4月28日 · As much of Alaska’s landmass crosses the magical temperature threshold that turns ice and snow into water, it’s time to consider the state’s richness in a resource more essential to humans than oil
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GeophysicalInstitute
A new satellite-receiving station at the Geophysical Institute and International Arctic Research Center will allow sci-