The importance of shallow hydrothermal island arc systems in ocean biogeochemistry

  title={The importance of shallow hydrothermal island arc systems in ocean biogeochemistry},
  author={Jeffrey A Hawkes and D. Connelly and M. Rijkenberg and E. Achterberg},
  journal={Geophysical Research Letters},
  • Jeffrey A Hawkes, D. Connelly, +1 author E. Achterberg
  • Published 2014
  • Geology
  • Geophysical Research Letters
  • Hydrothermal venting often occurs at submarine volcanic calderas on island arc chains, typically at shallower depths than mid–ocean ridges. The effect of these systems on ocean biogeochemistry has been under-investigated to date. Here we show that hydrothermal effluent from an island arc caldera was rich in Fe(III) colloids (0.02–0.2 µm; 46% of total Fe), contributing to a fraction of hydrothermal Fe that was stable in ocean water. Iron(III) colloids from island arc calderas may be transferred… CONTINUE READING
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