Mount Douglas (Alaska)

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Mount Douglas
MountDouglas.jpg
Crater lake at the summit, June 1990
Highest point
Elevation 7,021 ft (2,140 m)
Prominence 6,300 ft (1,900 m)
Listing
Coordinates 58°51′36″N153°31′59″W / 58.86000°N 153.53306°W / 58.86000; -153.53306
Geography
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Mount Douglas
Location in Alaska
Location Katmai National Park and Preserve, Alaska, U.S.
Parent range Aleutian Range
Topo map USGS Afognak D-5
Geology
Formed by Subduction zone volcanism
Mountain type Stratovolcano
Volcanic arc Aleutian Arc
Last eruption Holocene

Mount Douglas is a stratovolcano located south of Kamishak Bay, near the northeasternmost part of the Alaska Peninsula. It lies in the Katmai National Park and Preserve in Kenai Peninsula Borough. The mountain was officially named in 1906 after nearby Cape Douglas based on a 1904 report by USGS geologist G. C. Martin. The Alaska Volcano Observatory currently rates Douglas as Level of Concern Color Code Not Assigned.

Contents

The volcano has a warm and highly acidic crater lake approximately 160 m (525 ft) wide. In 1982, the lake had a temperature of 21 °C and a pH of 1, and temperatures of 114-118°C were measured in 1991. At the north flank of the volcano unglaciated and relatively uneroded lava flows are found. The last eruption is not known, but probably occurred during the Holocene. [1]

Map showing volcanoes of Alaska. Map of Alaska Peninsula Volcanoes.gif
Map showing volcanoes of Alaska.

See also

References

  1. "Douglas". Global Volcanism Program . Smithsonian Institution.

Other Sources