Accession Number : AD0618779

Title :   STUDIES ON TRACE ELEMENT DISTRIBUTION IN A SEDIMENT CORE FROM THE PACIFIC OCEAN,

Corporate Author : MIAMI UNIV FLA INST OF MARINE SCIENCE

Personal Author(s) : Landergren,Sture ; Joensuu,Oiva

Report Date : 1964

Pagination or Media Count : 11

Abstract : Samples from a sediment core taken during the Swedish Deep-Sea Expedition 1947-48 were analyzed for their content of some minor constituents. The core, No. 69, Sta. 102, in the collection of the Expedition, was obtained from 13 degrees 25' S, 149 degrees 30' W. It was analyzed earlier for the major constituents, the ferrides and boron. The lower part of the core (565-340 cm from the top) is a manganiferous marl ooze, and the upper part (336-6 cm) is a manganiferous-ferruginous clay ('red clay). The decrease in the carbonate content during sedimentation is rather sudden at about the 340-cm level; the corresponding increase in the phosphorus concentration is more gradual. The average relative concentration of silicate-oxide (sil), phosphorus (ap) and CaCO3 (car) and the concentrations of the constituents studied are given. The excess and deficiency in the concentrations, in comparison with the averages, are discussed and also the probable sources of elements. Four chief sources are responsible for the distribution pattern of the miror constituents studied: the fine fractions of weathering material from basic igneous rocks, authigenic mineral forming processes in the sea, biological processes, and precipitation of metal ions on the surface of colloidal particles. (Author)

Descriptors :   (*PACIFIC OCEAN, OCEAN BOTTOM SAMPLING), (*OCEAN BOTTOM SAMPLING, CHEMICALS), DISTRIBUTION, MANGANESE COMPOUNDS, IRON COMPOUNDS, CLAY, CARBONATES, PHOSPHORUS, SILICATES, OXIDES, CALCIUM COMPOUNDS, IGNEOUS ROCK, COLLOIDS, MINERALS, MARINE BIOLOGY, RARE EARTH ELEMENTS, ALKALINE EARTH METALS, ALKALI METALS, SEDIMENTATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE