Surface mapping and drilling of extinct seafloor massive sulphide deposits (eSMS) from the TAG Hydrothermal Field, 26oN: A tale of two ‘Jaspers’

Iain James Stobbs, University of Southampton, Southampton, SO14, United Kingdom, Paul Lusty, British Geological Survey Keyworth, Nottinghamshire, United Kingdom, Sven Petersen, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany and Bramley J Murton, National Oceanography Centre, Southampton, Southampton, United Kingdom