Mount Douglas (Alaska)
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| Mount Douglas | |
|---|---|
 Crater lake at the summit, June 1990 |
|
| Elevation | 7,021 feet (2,140 metres) |
| Location | Alaska, USA |
| Range | Aleutian Range |
| Coordinates | |
| Topo map | USGS Afognak D-5 |
| Type | Stratovolcano |
| Last eruption | Holocene |
Mount Douglas is a stratovolcano located south of Kamishak Bay at the northern part of the Alaska Peninsula. 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.
The volcano has a warm and highly acidic crater lake approximately 160 m (525 ft) wide. In 1992, the lake has a temperature of 21°C and a pH of 1.1. At the north flank of the volcano unglaciated and relatively uneroded lava flows are found. The last eruption was considered to have occurred during the Holocene (Nye et al.,1998).
[edit] Sources
- Siebert, L. and T. Simkin (2002-). Volcanoes of the World: an Illustrated Catalog of Holocene Volcanoes and their Eruptions. Smithsonian Institution, Global Volcanism Program Digital Information Series, GVP-3. URL: http://www.volcano.si.edu/world/
- Volcanoes of the Alaska Peninsula and Aleutian Islands-Selected Photographs
- Alaska Volcano Observatory
