Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Great Sitkin
Great Sitkin volcano in the Andreanof Islands of the central Aleutians is seen here rising to the NE across Sitkin Sound from Finger Bay on Adak Island. The volcano was constructed within the caldera of an older shield volcano, part of which forms the high snow-covered peak at the right. The 1740-m-high post-caldera cone of Great Sitkin volcano itself contains a small, 0.8 x 1.2 km ice-filled summit caldera, whose rim forms the irregular summit on the left horizon. In 1945, a 400-600-m wide lava dome was emplaced through a glacier filling this caldera. Photo by Fred Zeillemaker, 1982 (U.S. Fish and Wildlife Service, courtesy of Alaska Volcano Observatory).
Volcano Number:311120
Volcano Name:Great Sitkin
Country:United States
Volcano Type:Stratovolcano
Last Eruption:2018
Elevation:1740m
Tectonic Setting:Subduction zone / Intermediate crust (15-25 km)
Pop. within 5km:0
Pop. within 10km:0
Pop. within 30km:0
Pop. within 100km:0
Latitude:52.076
Longitude:-176.13



Eruption Data from the Global Volcanism Program of the Smithsonian Institution
Volcano Number Volcano Name Eruption Number Activity Type Explosivity Index Max Explosivity Index Modifier Activity Area Activity Unit Start Evidence Method Start Date End Date
311120 Great Sitkin 19727 Uncertain Eruption 1760
311120 Great Sitkin 19728 Uncertain Eruption 1784
311120 Great Sitkin 19729 Confirmed Eruption Historical Observations 1792/5/26
311120 Great Sitkin 19730 Uncertain Eruption 1828
311120 Great Sitkin 19731 Uncertain Eruption 1829
311120 Great Sitkin 19732 Uncertain Eruption 1904
311120 Great Sitkin 19733 Confirmed Eruption 2 Historical Observations 1933
311120 Great Sitkin 19734 Confirmed Eruption 2 Historical Observations 1945
311120 Great Sitkin 19735 Uncertain Eruption 1946/8/14
311120 Great Sitkin 19736 Confirmed Eruption 1 Historical Observations 1949/12/30 1950/1/7
311120 Great Sitkin 19737 Confirmed Eruption Historical Observations 1950/11/5 1950/11/29
311120 Great Sitkin 19739 Confirmed Eruption 2 Historical Observations 1974/2/19 1974/9/16
311120 Great Sitkin 19740 Uncertain Eruption 1987/3/18
311120 Great Sitkin 22276 Confirmed Eruption 1 Historical Observations 2018/6/10 2018/8/11
Emissions Data from the Global Volcanism Program of the Smithsonian Institution No emissions data found for this volcano.


Data from the Earthchem Portal


Data from the SESAR Database


Data from the MaGa Database
Sorry. No data exist for this volcano in the MaGa database.