Search results
Results From The WOW.Com Content Network
Shishaldin Volcano, or Mount Shishaldin (/ ʃ ɪ ˈ ʃ æ l d ən /), is one of six active volcanoes on Unimak Island in the eastern Aleutian Islands of Alaska. [1] It is the highest mountain peak of the Aleutian Islands, rising to a height of 9,373 ft (2,857 m) above sea level.
Quaternary Volcanoes of Japan - Geological Survey of Japan; Volcano on Google Map - Geological Survey of Japan; The National Catalogue of the Active Volcanoes in Japan - Japan Meteorological Agency; 日本の主な山岳標高 (Elevation of Principal Mountains in Japan) - Geospatial Information Authority of Japan (in Japanese)
The largest of those is Unimak Island, with an area of 1,571.41 mi 2 (4,069.9 km 2), followed by Unalaska Island, the only other Aleutian Island with an area over 1,000 square miles (2,600 km 2). The axis of the archipelago near the mainland of Alaska has a southwest trend, but at Tanaga Island (about 178° W) its direction changes to the ...
In 2015, researchers found that the volcano's structure bore patterns of magnetic striping on either side, indicating that the volcano is likely a hybrid of a mid-ocean ridge and a shield volcano. Geologic data also indicated that Tamu Massif formed at the junction of three mid-ocean ridges, which was a highly unusual occurrence. [14]
Then, they found a new volcano-like formation deep in the ocean waters. The new volcano-like structure sits more than 1,600 meters from the water's surface. So, it's far too deep to pose a danger ...
Mount Katmai (Russian: Катмай) is a large active stratovolcano (composite volcano) on the Alaska Peninsula in southern Alaska, located within Katmai National Park and Preserve. It is about 6.3 miles (10 km) in diameter with a central lake-filled caldera about two by three miles (3.2 by 4.8 km) in size, formed during the Novarupta eruption ...
The Aleutian Trench, formed by the subduction of the Pacific plate under the North American plate, sits south of the island arc. [2] A forearc basin reaching depths of 7 km occupies the space between the trench and the island arc and leads up to the Aleutian Ridge, the north side of which being the area where the most volcanic activity occurs. [2]
The top of the volcano is 1,370 metres (4,490 ft) above sea level. The volcanic cone is some 8 kilometres (5.0 mi) in diameter. There are three explosion craters at the summit. At Kitanakahara (北中腹) at about 800 metres (2,600 ft), there is a fumarole. [1] The volcano is made mostly from non-alkali mafic volcanic rock.