Radiochemical study of iron-manganese nodules of the pacific ocean

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:5763566

Arslanov, K A; Kuznetsov, V Yu; Kulikov, A N

In this study the possibility of the successful application of the technique of simultaneous determination of the isotopes /sup 238/U, /sup 234/U, /sup 232/Th, and /sup 230/Th present in a weighed sample of nodule material (five samples of IMN material were investigated), previously applied to the study of silicate materials, e.g., oceanic siliceous sediments, has been established. The possibility of using the ionium method or the alpha-radiographic method to determine the age and rate of growth of IMN's from three regions of the Pacific Ocean has been demonstrated. It has been shown that the ionium dating method in most cases is more accurate than the ionium-thorium method of dating IMN's. Differences observed in some cases between the growth rates of IMN's, calculated on the basis of the ionium method and by the method of determining the total alpha-radioactivity, can be explained by the positions of migration of /sup 226/Ra in the nodules. Rates of formation of IMN's, obtained here, vary within the limits 2.5-12.0 mm/10/sup 6/ yr and are found to be in satisfactory agreement with the published data of other investigators.

• OSTI ID: 5763566
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 30:3; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101 -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
58 GEOSCIENCES
580400* -- Geochemistry-- (-1989)
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
AGE ESTIMATION
ALPHA DECAY RADIOISOTOPES
ALPHA DETECTION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED PARTICLE DETECTION
CHEMICAL ANALYSIS
DETECTION
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
EVEN-EVEN NUCLEI
GEOCHEMICAL SURVEYS
GEOLOGIC DEPOSITS
HEAVY NUCLEI
IRON ORES
ISOTOPE DATING
ISOTOPE RATIO
ISOTOPES
MANGANESE ORES
MARINE SURVEYS
MASS TRANSFER
NATURAL RADIOACTIVITY
NUCLEI
ORES
ORIGIN
PACIFIC OCEAN
QUANTITATIVE CHEMICAL ANALYSIS
RADIATION DETECTION
RADIOACTIVITY
RADIOCHEMICAL ANALYSIS
RADIOECOLOGICAL CONCENTRATION
RADIOISOTOPES
RADIONUCLIDE MIGRATION
RADON 226
RADON ISOTOPES
SEA BED
SEAS
SURFACE WATERS
SURVEYS
THORIUM 230
THORIUM 232
THORIUM ISOTOPES
URANIUM 234
URANIUM 238
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES