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The following report contains the preliminary results of the organic geochemical studies carried out on six samples from the cores of Hole 379A and Site 381, Leg 42B, drilled by D/V Glomar Challenger during its research operations in the Black Sea during May and June 1975. The studies were done in two parts. The first included both organic matter and mineral components of the sediments, which were analyzed by the Organic Geochemistry and other laboratories of the Geological Institute, Bulgarian Academy of Sciences. The second part of the studies included total nitrogen determination and identification of amino acids in the sediments, which was done by the Department of Organic Chemistry, Higher Institute of Chemical Technology, Sofia. Differential thermal analysis of the noncarbonate and bitumoid-free mineral components was obtained, under vacuum, by Ph. Zakharieva and X-ray examinations were done by D. Stephanov. These studies represent the first participation of the Bulgarian scientific laboratories in the Deep Sea Drilling Project.

Preliminary Organic Geochemical Studies of DSDP Cores, Leg 42B, Black Sea