Superfast spreading rate crust 2 and 3 [Elektronische Ressource] : Expeditions 309 and 312 of the riserless drilling platform Cristobal, Pananma, to Balboa, Panama, Site 1256 8 July-28 August 2005 and Victoria, British Columbia (Canada), to Cristobal, Panama Site 1256 28 October-28 December 2005 Teagle, D. A. H.