Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Seguam
The snow-dappled slopes of Pyre Peak are seen from near the western tip of Seguam Island. The elliptical, 11.5 x 24 km island contains two calderas, each with a Holocene central volcano. A third Holocene cone lies at the eastern end of the island. Pyre Peak was constructed within the 3-km-wide westernmost caldera. The 1054-m-high cone rises 1 km above the caldera floor and has been the source of most of the historical eruptions of Seguam volcano. Photo by Steve Ebbert, 1996 (U.S. Fish and Wildlife Service).
Volcano Number:311180
Volcano Name:Seguam
Country:United States
Volcano Type:Stratovolcano(es)
Last Eruption:1993
Elevation:1054m
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:52.315
Longitude:-172.51



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
311180 Seguam 19770 Confirmed Eruption 5 ? Wilcox volcano Ar/Ar -7300
311180 Seguam 19771 Confirmed Eruption 0 W flank of cone in eastern caldera Uranium-series -5100
311180 Seguam 19772 Confirmed Eruption 0 W flank of cone in eastern caldera Uranium-series -4050
311180 Seguam 19773 Confirmed Eruption West of Wilcox volcano Uranium-series 250
311180 Seguam 19774 Confirmed Eruption Historical Observations 1786 1790
311180 Seguam 19775 Uncertain Eruption 1827
311180 Seguam 19776 Confirmed Eruption 2 Historical Observations 1891
311180 Seguam 19777 Confirmed Eruption 3 Historical Observations 1892/4/15
311180 Seguam 19778 Confirmed Eruption 3 Historical Observations 1902
311180 Seguam 19779 Uncertain Eruption 1927
311180 Seguam 19780 Confirmed Eruption 1 Pyre Peak (2.5 km SE of summit) Historical Observations 1977/3/6 1977/3/8
311180 Seguam 19781 Confirmed Eruption 2 Pyre Peak (1.5 km south of summit) Historical Observations 1992/12/27 1992/12/30
311180 Seguam 19782 Confirmed Eruption 2 Near Pyre Peak Historical Observations 1993/5/28 1993/8/31
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.