Adams Seamount

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 25.37°S
  • 129.27°W

  • -39 m
    -128 ft

  • 333050
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Adams Seamount.

The Global Volcanism Program has no Weekly Reports available for Adams Seamount.

The Global Volcanism Program has no Bulletin Reports available for Adams Seamount.

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude
333050

50 BCE

-39 m / -128 ft

25.37°S
129.27°W

Volcano Types

Submarine
Lava dome

Rock Types

Major
Basalt / Picro-Basalt
Trachybasalt / Tephrite Basanite
Trachyte / Trachyandesite
Minor
Trachyandesite / Basaltic trachy-andesite
Andesite / Basaltic Andesite

Tectonic Setting

Intraplate
Oceanic crust (< 15 km)

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
0
0
0
44

Geological Summary

Adams Seamount was constructed above the Pitcairn hot spot in the central Pacific, about 90 km WSW of Pitcairn Island. The massive seamount rises about 3500 m to within 59 m of the sea surface about 25 km SW of another large submarine volcano within the Pitcairn hot spot, Bounty Seamount. The Pitcairn hot spot was built over 30-million-year-old Pacific Ocean crust, and in addition to the two large volcanoes, Adams and Bounty seamounts, contains about 20 small volcanic hills about 500 m high. Although Bounty Seamount, which rises to within 450 m of the sea surface, appears morphologically more youthful than Adams and water samples indicate continuing hydrothermal activity, two late-Pleistocene Potassium-Argon dates of about 338,000 and 350,000 years were obtained from the flanks of Bounty. Alkali basaltic rocks were dredged from the flanks of Adams Seamount, whose summit appears to consist of a trachytic lava dome. Several Potassium-Argon dates of Holocene age were obtained from dredges at Adams Seamount (Guillou et al., 1997), the youngest of which was 2000 +/- 1000 years.

References

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Guillou H, Garcia M O, Turpin L, 1997. Unspiked K-Ar dating of young volcanic rocks from Loihi and Pitcairn hot spot seamounts. J Volc Geotherm Res, 78: 239-249.

Hekinian R, Cheminee J L, Dubois J, Stoffers P, Scott S, Guivel C, Garbe-Schonberg D, Devey C, Bourdon B, Lackschewitz K, McMurtry G, Le Drezen E, 2003. The Pitcairn hotspot in the South Pacific: distribution and composition of submarine volcanic sequences. J Volc Geotherm Res, 121: 219-245.

Stoffers P, Hekinian R, Ackermand D, Binard N, Botz R, Devey C W, Hansen D, Hodkinson R, Jeschke G, Lange J, Van de Perre E, Scholten J, Schmitt M, Sedwick P, Woodhead J D, 1990. Active Pitcairn hot spot found. Marine Geol, 95: 51-55.

Eruptive History


Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
0050 BCE ± 1000 years Unknown Confirmed 0 Potassium-Argon
1050 BCE ± 1000 years Unknown Confirmed 0 Potassium-Argon
4050 BCE ± 2000 years Unknown Confirmed 0 Potassium-Argon
5050 BCE ± 1000 years Unknown Confirmed 0 Potassium-Argon

The Global Volcanism Program has no synonyms or subfeatures listed for Adams Seamount.

The Global Volcanism Program has no photographs available for Adams Seamount.

Smithsonian Sample Collections Database


A listing of samples from the Smithsonian collections will be available soon.

Affiliated Sites

Large Eruptions of Adams Seamount Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.