Mount Douglas (Alaska)

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Mount Douglas
Image:MountDouglas.jpg Crater lake at the summit, June 1990
Elevation:	2,140 m (7,021 ft)
Location:	Alaska, USA
Range:	Aleutian Range

<tr><td style="border-top:1px solid #999966; border-right:1px solid #999966" bgcolor=#e7dcc3 width=85>Coordinates: <td style="border-top:1px solid #999966" width=220>58°51′36″ N 153°31′59″ W <tr><td style="border-top:1px solid #999966; border-right:1px solid #999966" bgcolor=#e7dcc3 width=85>Topo map: <td style="border-top:1px solid #999966" width=220>USGS Afognak D-5 <tr><td style="border-top:1px solid #999966; border-right:1px solid #999966" bgcolor=#e7dcc3 width=85>Type: <td style="border-top:1px solid #999966" width=220>Stratovolcano <tr><td style="border-top:1px solid #999966; border-right:1px solid #999966" bgcolor=#e7dcc3 width=85>Age of rock: <td style="border-top:1px solid #999966" width=220> <tr><td style="border-top:1px solid #999966; border-right:1px solid #999966" bgcolor=#e7dcc3 width=85>Last eruption: <td style="border-top:1px solid #999966" width=220>Holocene </table> 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 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).

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