- Brothers volcano
The Brothers volcano is a
submarine volcano in the Kermadec Arc, situated 400 kilometres north east ofWhakaari/White Island . Within its oval outline, which measures 13 km by 8 km, it contains a 3 km wide caldera with walls 300-500 m high. A dacite dome rises 350 m from the caldera floor (which lies 1850 m below sea level), with a smaller dome just to its northeast. The caldera walls and the larger dome host numerous hydrothermal vents, which send plumes of hot water 750 m up through the water column. It is the most hydrothermally active volcano known in the Kermadec Arc.References
* de Ronde, C. E. J., Hannington, M. D., Stoffers, P., Wright, I. C., Ditchburn, R. G., Reyes, A. G., Baker, E. T., Massoth, G. J., Lupton, J. E., Walker, S. L., Greene, R. R., Soong, C. W. R., Ishibashi, J., Lebon, G. T., Bray, C. J., and Resing, J. A. (2005). Evolution of a Submarine Magmatic-Hydrothermal System: Brothers Volcano, Southern Kermadec Arc, New Zealand, "Economic Geology", 100(6), 1097-1133. DOI|10.2113/100.6.1097.
*VNUM|1=0401-15-External links
* [http://oceanexplorer.noaa.gov/explorations/05fire/logs/may09/media/brothers_map.html Topographic map of the Brothers volcano]
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