Originally issued as Reference No. 68-4, series later renamed WHOI-.
In February-March 1965, a series of piston cores were taken aboard ATLANTIS II
off the coast of Arabia, Pakistan, and India (Figure 1) in water depths of about 3,000
meters. The principal objectives of this program were (a ) to obtain information on the
change in petrology of the sediments as a function of geography and depth (b) to study
the microfauna in the sediment profiles, and (c) to apply geochemical tools for the
elucidation of the diagenetic fate of the organic matter and the history of the sediments.
This article presents data on the geochemical part of the project. Principally, we are
concerned with the oxygen and carbon isotope distribution in carbonates, the carbon isotope
composition of sedimentary organic matter, and the amino acid composition of the sediment
material. These studies represent a part of a larger program at our Institute which is
concerned with the distribution of (a) stable isotopes and (b) organic compounds such as
amino acids, carbohydrates, or hydrocarbons in recent and ancient sediments, natural
waters, and marine organisms.
National Science Foundation
under Grant GP-4904
International Indian Ocean Expedition (1960-1965)
Atlantis II (Ship : 1963-) Cruise AII15
Woods Hole Open Access Server