Rapid dike emplacement leads to dramatic hydrothermal plume release during seafloor spreading events Posted on July 1, 2014 by UHNAI Webmaster in Dziak, R.P., Bohnenstiehl, D.R., Cowen, J.P., Baker, E.T., Haxel, J.H., Fowler, M.J. (). Rapid dike emplacement leads to dramatic hydrothermal plume release during seafloor spreading events. , 35,