Aniakchak


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Aniakchak

an active volcanic crater in SW Alaska, on the Alaska Peninsula: the largest explosion crater in the world. Height: 1347 m (4420 ft.). Diameter: 9 km (6 miles)
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Our analysis suggests a somewhat more complicated population history in Southwest Alaska in the wake of the Aniakchak II eruption, as parts of the Alaska Peninsula and the Aleutians were peripheral to the plume of ash fallout.
(5.) Katmai National Park and Preserve, Aniakchak National Monument and Preserve, Alagnak Wild River, Long-Range Interpretive Plan, Nat'l Park Serv., U.S.
The Aniakchak tephra deposit, a late Holocene marker horizon in western Alaska.
These include 70-million-year-old hadrosaur prints, the first dinosaur tracks from Alaska, located after two years of searching Aniakchak National Monument and Preserve on the Aleutian Islands; the most complete skeleton of the only pygmy island-dwelling mammoth at Channel Islands National Park in California; the first fossils ever described from the western hemisphere, mollusks collected in 1687 at what is now Colonial National Historical Park in Virginia; and the graveyards of 20-million-year-old camels and rhinos at Agate Fossil Beds National Monument in Nebraska.
Photo: View of Alaska's Aniakchak caldera,formed by the collapse of a volcanic cone during an eruption about 3,400 years ago.
The borough is home to two national parks and preserves (Katmai and Lake Clark), Aniakchak National Monument and Preserve, and two national wildlife refuges: Becharof National Wildlife Refuge and Alaska Peninsula National Wildlife Refuge.
Areas Served: Bristol Bay, Alaska Peninsula, Katmai National Park, Aniakchak National Park, Becharof Wildlife Refuge