Aleutian Range

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Aleutian Range
Alaska Peninsula, Peulik Volcano and Ukinrek Maars
Highest point
Peak Mount Redoubt
Elevation 10,197 ft (3,108 m)
Coordinates 60°29′07″N 152°44′35″W / 60.48528°N 152.74306°W / 60.48528; -152.74306
Length 600 mi (970 km)
Map of Alaska Peninsula Volcanoes.gif
Map showing volcanoes on the Alaska Peninsula
Country United States
State Alaska
Range coordinates 57°04′N 156°59′W / 57.07°N 156.99°W / 57.07; -156.99Coordinates: 57°04′N 156°59′W / 57.07°N 156.99°W / 57.07; -156.99
Borders on Tordrillo Mountains

The Aleutian Range is a major mountain range of southwest Alaska, extending from Chakachamna Lake (80 miles/130 km southwest of Anchorage) to Unimak Island, at the tip of the Alaska Peninsula. It includes all of the mountains of the Peninsula. It is especially notable for its large number of active volcanoes, which are also part of the larger Aleutian Arc. The mainland part of the range is about 600 miles (1000 km) long; the Aleutian Islands are (geologically) a partially submerged western extension of the range that stretches for another 1,600 km (1000 mi). However the official designation "Aleutian Range" includes only the mainland peaks and the peaks on Unimak Island.

The range is almost entirely roadless wilderness, and Katmai National Park and Preserve, a large national park within the range, must be reached by boat or plane.

Blockade Glacier in the Neacola Mountains

The core Aleutian Range can be divided into three mountain groups. Listed from southwest to northeast, they are:

See Aleutian Islands for the continuation of the range to the west of Unimak Island. Just to the north of the Aleutian Range are the Tordrillo Mountains, the southeasternmost extent of the Alaska Range.[1]

Aleutian Range

Selected mountains:

Volcanic Eruptions[edit]

On July 12, 2008, Mount Okmok, part of the Eastern Aleutian Islands, erupted. A giant, rapidly moving ash and gas cloud shot up to a height of 15,240 m as a result of this eruption.[2]


In June 2014, a 7.9 magnitude earthquake struck the Aleutian Islands. Although it was a powerful quake, no volcanic eruptions or tsunamis resulted, which is an unusual outcome since the area is seismically active.[3]


  1. ^ "GNIS Detail - Tordrillo Mountains". Retrieved 21 November 2012. 
  2. ^ "Explosive Eruption Of Okmok Volcano In Alaska". Science Daily. 21 July 2008. Retrieved 14 September 2016. 
  3. ^ Yulsman, Tom (23 July 2014). "Massive Earthquake Shakes Aleutian Islands". Discover Magazine. Retrieved 14 September 2016. 

External links[edit]