Kasuga 2 | U.S. Geological Survey

Kasuga 2 | U.S. Geological Survey
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Kasuga 2
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Kasuga 2, also referred to as Minami Kasuga (South Kasuga), is the central of three volcanoes forming the Kasuga seamount chain, which trends SSW from the volcanic front of the Izu-Marianas arc.
Facts Block
Location:
Commonwealth of the Northern Mariana Islands
Latitude:
21.6° N
Longitude:
143.637° E​​​​​​​
Elevation:
-274 (m) -899 (f)​​​​​​​
Volcano type:
Submarine​​​​​​​
Composition:
Basalt - Andesite​​​​​​​ - Trachyandesite​​​​​​​
Most recent eruption:
unknown
Threat Potential:
Very low*
*based on the
National Volcano Early Warning System
Kasuga 2 is the central of three volcanoes forming the Kasuga seamount chain, which trends SSW from the volcanic front of the Izu-Marianas arc. It rises from about 3,000 m depth to within 170 m of the ocean surface. Two subsidiary cones are located low on the east flank. The morphology is more complex than Kasuga 1 to the north, and prominent ridges separate slopes of interspersed volcaniclastic and lava flow fields. Radiometric dating indicates an age of less than 8,000 years and probably less than 1,000 years; radium/thorium disequilibrium ratios suggest the flows may be only a few centuries old. Active hydrothermal vents are located at the summit, at the base of summit ridges, and on the lower flanks.
July 19, 2019
Volcanic hazards in the Pacific U.S. Territories
Volcanic hazards in the Pacific U.S. Territories
The Commonwealth of the Northern Mariana Islands, Guam, and American Samoa lie along the western side of the famed Pacific Ring of Fire. Here, the processes of active island and submarine volcanoes produce activity both underwater and in the atmosphere that poses potential hazards to the daily lives of residents and travelers. Since 2000, CNMI volcanoes have erupted six times, and one...
Authors
Gabrielle Tepp, Brian Shiro, William W. Chadwick
By
Volcano Hazards Program
Volcano Science Center
Agrigan
Ahyi Seamount
Alamagan
Anatahan
Asuncion
Daikoku Seamount
East Diamante
Esmeralda Bank
Farallon de Pajaros
Fukujin Seamount
Guguan
Kasuga 2
Maug Islands
Ofu-Olosega
Pagan
Ruby
Sarigan
South Sarigan Seamount
Supply Reef
Ta'u Island
Tutuila Island
Zealandia Bank
Subduction Zone Science
October 22, 2018
2018 update to the U.S. Geological Survey national volcanic threat assessment
2018 update to the U.S. Geological Survey national volcanic threat assessment
When erupting, all volcanoes pose a degree of risk to people and infrastructure, however, the risks are not equivalent from one volcano to another because of differences in eruptive style and geographic location. Assessing the relative threats posed by U.S. volcanoes identifies which volcanoes warrant the greatest risk-mitigation efforts by the U.S. Geological Survey and its partners...
Authors
John W. Ewert, Angela K. Diefenbach, David W. Ramsey
By
Volcano Hazards Program
Volcano Science Center
Agrigan
Ahyi Seamount
Alamagan
Anatahan
Asuncion
Belknap
Black Butte Crater Lava Field
Black Rock Desert Volcanic Field
Blue Lake Crater
Carrizozo Lava Flow
Cascade Range Weekly Update
Cinnamon Butte
Clear Lake Volcanic Field
Coso Volcanic Field
Crater Lake
Craters of the Moon Volcanic Field
Daikoku Seamount
Davis Lake Volcanic Field
Devils Garden Lava Field
Diamond Craters Volcanic Field
Dotsero Volcanic Center
East Diamante
Esmeralda Bank
Farallon de Pajaros
Fukujin Seamount
Glacier Peak
Guguan
Haleakalā
Hell's Half Acre Lava Field
Hualālai
Indian Heaven Volcanic Field
Jordan Craters Volcanic Field
Kama‘ehuakanaloa
Kasuga 2
Kīlauea
Lassen Volcanic Center
Long Valley Caldera
Mammoth Mountain
Markagunt Plateau Volcanic Field
Maug Islands
Mauna Kea
Mauna Loa
Medicine Lake
Mono Lake Volcanic Field
Mono-Inyo Craters
Mount Adams
Mount Bachelor
Mount Baker
Mount Hood
Mount Jefferson
Mount Rainier
Mount Shasta
Mount St. Helens
Newberry
Ofu-Olosega
Pagan
Red Hill-Quemado Volcanic Field
Ruby
Salton Buttes
San Francisco Volcanic Field
Sand Mountain Volcanic Field
Sarigan
Soda Lakes
South Sarigan Seamount
Supply Reef
Ta'u Island
Three Sisters
Tutuila Island
Ubehebe Craters
Uinkaret Volcanic Field
Valles Caldera
Wapi Lava Field
Weekly Update
West Crater Volcanic Field
Yellowstone
Zealandia Bank
Zuni-Bandera Volcanic Field
August 1, 1995
Volcanic investigations in the Commonwealth of the Northern Mariana Islands, April to May 1994
Volcanic investigations in the Commonwealth of the Northern Mariana Islands, April to May 1994
A team of U.S. Geological Survey geologists, a seismologist, and technicians gathered new geologic, seismic, and deformation data in the Commonwealth of the Northern Mariana Islands (CNMI). Nine volcanic islands on the active East Mariana Ridge north of Saipan were examined between April 20 and May 3, 1994. In addition, a new radio-telemetry seismic station was installed on the island of...
Authors
M. K. Sako, F. A. Trusdell, R. Y. Koyanagi, George Kojima, R. B. Moore
By
Natural Hazards Mission Area
Volcano Hazards Program
Volcano Science Center
Agrigan
Ahyi Seamount
Alamagan
Anatahan
Asuncion
Daikoku Seamount
East Diamante
Esmeralda Bank
Farallon de Pajaros
Fukujin Seamount
Guguan
Kasuga 2
Kīlauea
Maug Islands
Pagan
Ruby
Sarigan
South Sarigan Seamount
Supply Reef
Zealandia Bank
View All
Facts Block
Location:
Commonwealth of the Northern Mariana Islands
Latitude:
21.6° N
Longitude:
143.637° E​​​​​​​
Elevation:
-274 (m) -899 (f)​​​​​​​
Volcano type:
Submarine​​​​​​​
Composition:
Basalt - Andesite​​​​​​​ - Trachyandesite​​​​​​​
Most recent eruption:
unknown
Threat Potential:
Very low*
*based on the
National Volcano Early Warning System
Volcano Hazards Program Links
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