Mount Kanaga
Encyclopedia
Mount Kanaga is a stratovolcano
at the northern tip of Kanaga Island
in the Aleutian Islands, Alaska
. It is situated within a caldera
, which forms the arcuate Kanaton Ridge south and east of Kanaga. A crater lake
occupies part of the SE caldera floor. The summit of Kanaga has a crater with fumarolic activity.
It is located about 25 km (16 mi) west of the U.S. Navy installation and port on Adak Island
. The volcano
erupted intermittently through much of 1994, dusting the community of Adak at least once with fine ash.
Stratovolcano
A stratovolcano, also known as a composite volcano, is a tall, conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruptions...
at the northern tip of Kanaga Island
Kanaga Island
Kanaga Island is a part of the Andreanof Islands group of the Aleutian Islands in Alaska. The island measures roughly 30 miles long and between 4 and 8 miles wide with an area of 142 sq mi , making it the 42nd largest island in the United States...
in the Aleutian Islands, Alaska
Alaska
Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...
. It is situated within a caldera
Caldera
A caldera is a cauldron-like volcanic feature usually formed by the collapse of land following a volcanic eruption, such as the one at Yellowstone National Park in the US. They are sometimes confused with volcanic craters...
, which forms the arcuate Kanaton Ridge south and east of Kanaga. A crater lake
Crater lake
A crater lake is a lake that forms in a volcanic crater or caldera, such as a maar; less commonly and with lower association to the term a lake may form in an impact crater caused by a meteorite. Sometimes lakes which form inside calderas are called caldera lakes, but often this distinction is not...
occupies part of the SE caldera floor. The summit of Kanaga has a crater with fumarolic activity.
It is located about 25 km (16 mi) west of the U.S. Navy installation and port on Adak Island
Adak Island
Adak Island is an island near the western extent of the Andreanof Islands group of the Aleutian Islands in Alaska. Alaska's southernmost town, Adak, is located on the island...
. The volcano
Volcano
2. Bedrock3. Conduit 4. Base5. Sill6. Dike7. Layers of ash emitted by the volcano8. Flank| 9. Layers of lava emitted by the volcano10. Throat11. Parasitic cone12. Lava flow13. Vent14. Crater15...
erupted intermittently through much of 1994, dusting the community of Adak at least once with fine ash.