"Of this great expanse, only the area equivalent to a few football fields has been sampled biologically," according to the team conducting the deep sea project for the Census of Marine Life.
The Joint Oceanographic Institutions Deep Earth Sampling (JOIDES) project began in 1969, continued with the Deep Sea Drilling Project (DSDP), and, since 1976, with the International Phase of Ocean Drilling (IPOD) project.
Several legs of the Deep Sea Drilling Project (1968 83) were in the Indian Ocean.
As part of the Deep Sea Drilling Project conducted from 1968 to 1983 by the U.S. government, the drilling ship Glomar Challenger undertook several cruises of Antarctic and subantarctic waters to gather and study materials on and below the ocean floor.
This research evolved into the Deep Sea Drilling Project, which has sampled sea-floor sediment around the globe.
This terrace was reported by the Deep Sea Drilling Project Leg 57 as an area with turbidites at a high sedimentation rate (Shipboard Scientific Party 1980), and thus, the terrace is expected to be suitable for seismo-turbidite analysis.
Legs 56 and 57 of the Deep Sea Drilling Project (DSDP) survey revealed that the material constituting the landward slope has been eroded and the inboard trench slope has been subsiding since the Miocene (von Huene and Lallemand [1990]).
In this study, we investigate the frictional properties of incoming pelagic sediments at the Tohoku subduction zone that were collected from the outer rise of the Pacific Plate by Leg 56 of the Deep Sea Drilling Project (DSDP; Figure 1).
A huge amount of micropaleontological data is available from on-land sections, oil wells, and deep-sea drilling cores obtained during cruises such as Deep Sea Drilling Project (DSDP) Leg 31 (sites 299 302) and Ocean Drilling Program (ODP) Leg 127/128 (sites 794 799).
Observations indicate that when compared with N-MORB the CIOB basalts are relatively enriched in incompatible elements (Zr = 63-228 ppm, Y = 31-86 ppm) and relatively less incompatible element abundance than the K-P (K2O and P2O5) rich basalts from the Deep Sea Drilling Project (DSDP) Site 215, situated at the eastern margin of the basin [29, 30].
