Intra-oceanic subduction systems: introduction, P T Leat and R D Larter • Controls on back-arc crustal accretion: insights from the Lau, Manus and Mariana basins, F Martinez and B Taylor • The subduction factory: its role in the evolution of the Earth's crust and mantle, Y Tatsumi and T Kogiso • A general model of arc–continent collision and subduction polarity reversal from Taiwan and the Irish Caledonides, P D Clift, H Schouten and A E Draut • Felsic volcanism in the Kermadec arc, SW Pacific: crustal recycling in an oceanic setting, I E M Smith, T J Worthington , R B Stewart, R C Price and J A Gamble • Chemically rich and diverse submarine hydrothermal plumes of the southern Kermadec volcanic arc (New Zealand), G J Massoth, C E J De Ronde, J E Lupton, R A Feely, E T Baker, G T Lebon and S M Maenner • Submarine hydrothermal venting on the southern Kermadec volcanic arc front (offshore New Zealand): location and extent of particle plume signatures, E T Baker, R A Feely, C E J De Ronde, G J Massoth and I C Wright • Geodynamic setting of Izu–Bonin–Mariana boninites, A Deschamps and S Lallemand • Volcanic history of the back-arc region of the Izu–Bonin (Ogasawara) arc, O Ishizuka, K Uto and M Yuasa • Geochemical evolution of magmatism in an arc–arc collision: the Halmahera and Sangihe arcs, eastern Indonesia, C G Macpherson, E J Forde, R Hall and M F Thirlwall • Some geochemical constraints on hot fingers in the mantle wedge: evidence from NE Japan, Y Tamura • Mantle genesis and crustal evolution of primitive calc-alkaline basaltic magmas from the Lesser Antilles arc, M Pichavant and R Macdonald • Structure and tectonic evolution of the South Sandwich arc, R D Larter, L E Vanneste, P Morris and D K Smythe • Magmatism in the South Sandwich arc, P T Leat, J L Smellie, I L Millar and R D Larter • Back-arc spreading and mantle flow in the East Scotia Sea, R Livermore • Resolving mantle components in oceanic lavas from segment E2 of the East Scotia back-arc ridge, South Sandwich Islands, D Harrison, P T Leat, P G Burnard, G Turner, S Fretzdorff and I L Millar •