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Composition of phosphorites from continental margins, seamounts, and islands
Behavior of molybdenum and manganese is studied in phosphorite samples from shelves, seamounts, and islands of the ocean. In shelf phosphorites molybdenum and manganese contents... -
Contents of major components, U, and Th in bones and bone debris
Uranium and thorium contents, as well as their distribution patterns have been studied in biogenic phosphates from the Atlantic and Pacific Oceans. Differently lithified fish... -
Contents of P2O5 and REE in phosphorites from shelves and Pacific seamounts
Recent phosphorites from the Namibian shelf are characterized by low REE contents, depletion in REE compared to host sediments and sharp deficiency of lanthanum and europium. In... -
Uranium and radioactive isotopes in bottom sediments and Fe-Mn nodules and cr...
The main stages of the sedimentary cycle of uranium in modern marine basins are under consideration in the book. Annually about 18 thousand tons of dissolved and suspended... -
Chemical composition of rocks from the Kammu Seamount and from low atolls of ...
Devoted to studies of phosphatized rocks from the Kammu Seamount. Supplement to: Shkol'nik, E L; Baturin, Gleb N; Zhegallo, E A; Zalishchak, B L; Basov, Ivan A (2006):... -
Rare earth element contents and sources in phosphorites from Pacific seamounts
Distribution of rare earth elements (REE) was studied in phosphorites collected from seamounts at depths from about 400 to 3600 m. In general phosphorites are characterized by... -
Isotope compositions of oxygen and carbon from phosphates and Fe-Mn crusts an...
Results of a study of phosphates collected on Pacific Ocean seamounts using some physicochemical methods are described. Particular attention is paid to isotopic studies of both... -
Contents of P2O5, Corg, Sr, and Ba in phosphorites and host sediments from th...
Sr contents in phosphorites on shelves of the Southwest Africa, and of Chile and Peru increase with degree of their lithification, from 0.05 to 0.28% and from 0.13 to 0.16%... -
Exchange capacity and chemical composition of Fe-Mn nodules from the Central ...
Constants of calcium, magnesium, zinc, cobalt, copper, and nickel exchange for sodium in iron-manganese nodules taken from different parts of the Pacific Ocean were determined... -
Composition of palagonitized basalts, their alteration products, and palagoni...
Detailed petrochemical and geochemical studies of two samples of palagonitized basalts collected from depths 3060 and 4800 m have shown that palagonitization of tholeiitic... -
Composition of marine phosphorites and phosphate-bearing sediments
The book deals with behavior of phosphorus and its concentration in oceanic phosphorites. The major stages of marine geochemical cycle of phosphorus including its supply to... -
Rare earth element contents in deposits and minerals of the ocean floor
Current understanding of rare earth element (REE) geochemistry in the ocean is given in the book. Chemical properties determining REE migration ability in natural processes,... -
Chemical composition of ocean phosphorites and hosted sediments
The book provides an overview of recent data on processes of dispersion and concentration of phosphorus in marine sedimentation. Distribution, chemical and mineral compositions,... -
Abundance and chemical and mineral compositions of nodules from the Pacific O...
The monograph highlights extensive materials collected during expeditions of P.P. Shirshov Institute of Oceanology. We consider facial conditions of nodule formation,...