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The Global Volcanism Program has no activity reports for Boomerang Seamount.
The Global Volcanism Program has no Weekly Reports available for Boomerang Seamount.
The Global Volcanism Program has no Bulletin Reports available for Boomerang Seamount.
An active submarine volcano 18 km NE of Amsterdam Island was first discovered during a bathymetric survey in 1996. The volcano, named Boomerang Seamount, rises to within 650 m of the sea surface and has a 2-km-wide summit caldera that is 200 m deep. Rift zones extend SE and north of the basaltic volcano, giving it an arcuate shape. Boomerang Seamount lies along the axis of the Southeast Indian Ridge and marks the site of the Amsterdam-St. Paul hotspot. This hotspot may have been the source of the Ninetyeast Ridge submarine volcanoes on the Australian Plate prior to its "capture" by the Southeast Indian Ridge, after which volcanism was restricted to the Antarctic Plate. Very short half-life radionuclide dating of fresh volcanic glass samples recovered during the 1996 expedition indicated that Boomerang Seamount had erupted only about 5 months earlier (Johnson et al., 2000). Water column temperature anomalies above the seamount suggest the presence of hydrothermal activity within the caldera.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1995 Dec 1 ± 30 days||Unknown||Confirmed||0||Uranium-series|
The Global Volcanism Program has no synonyms or subfeatures listed for Boomerang Seamount.
The Global Volcanism Program has no photographs available for Boomerang Seamount.
The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.
Johnson K T M, Graham D W, Rubin K H, Nicolaysen K, Scheirer D S, Forsyth D W, Baker E T, Douglas-Priebe L M, 2000. Boomerang Seamount: the active expression of the Amsterdam-St. Paul hotspot, Southeast Indian Ridge. Earth Planet Sci Lett, 183: 245-259.