Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Koniuji
A steep, arcuate cliff drops nearly 300 m to the coast on the western side of Koniuji Island. This very small, 1 x 1.5 km wide island, located between Atka Island and Kasatochi volcano, is the emergent top of a mostly submarine volcano. A NE-trending fault cuts the SE side of the island (right). Despite its apparently dissected condition, Holocene lava flows and domes have been dated. Reports of eruptive activity may be erroneous and are considered to refer to eruptions of the relatively undissected Kasatochi volcano to the west. Photo by E. Bailey, 1982 (U.S. Fish and Wildlife Service).
Volcano Number:311140
Volcano Name:Koniuji
Country:United States
Volcano Type:Stratovolcano
Last Eruption:-1150
Elevation:273m
Tectonic Setting:Subduction zone / Intermediate crust (15-25 km)
Pop. within 5km:0
Pop. within 10km:0
Pop. within 30km:0
Pop. within 100km:173
Latitude:52.22
Longitude:-175.13



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
311140 Koniuji 19746 Confirmed Eruption Ar/Ar -3850
311140 Koniuji 19747 Confirmed Eruption Ar/Ar -2650
311140 Koniuji 19748 Confirmed Eruption Ar/Ar -1150
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.