The Ocean Drilling Program (ODP) has completed over ten years of scientific ocean drilling in search of answers relating to the tectonic evolution of passive and active continental margins, origin and evolu tion of oceanic crust, origin and evolution of marine sedimentary sequences, and paleoceanography. To ad dress these problems, ODP has made numerous advances in technology for retrieval of continuous undisturbed cores under hostile environmental conditions. ODP curates over 220 km of cored material and associated scientific data bases and publishes results of the scientific expeditions in a continuous series of Proceedings volumes. The Ocean Drilling Program (ODP) has completed over ten years of scientific ocean drilling in search of answers relating to the tectonic evolution of passive and active continental margins, origin and evolutio of oceanic crust, origin and evolution of marine sedimentary sequences, and paleoceanography . O ad curates over 220 km of cored material and associated scientific data bases and publishes results of the scientific expeditions in a continuous series of Proceedings volumes.