Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

RADIOACTIVITY OF BLACK SEA DEPOSITS (in Russian)

Journal Article · · Doklady Akad. Nauk S.S.S.R.
OSTI ID:4840740
; ; ;
The content of radium in ocean deposits varies from 4 to 50 x 10/sup -12/ g/g, while the radium content in Black Sea deposits is relatively constant at 5 to 9 x 10/sup -13/ g/g (substantially lower than in ocean deposits). The radium content does not vary with the height of the core sample. The absolute content of ionium varies from 0.8 to 5.8 x 10/sup -10/ g/g (approximately that found in ocean deposits) with the higher ionium values being found in the surface layers. Since the Black Sea deposits are relatively young in age, the amount of ionium is almost always greater than the amount of radium, and the ionium and radium are not in equilibrium with each other. The uranium content in Black Sea deposits is 10 to 12 x 10/sup -6/ g/g (5 to 7 times greater than the uranium con tent in typical ocean deposits). The surface layers of the core sample have a higher uranium content than the lower layers. The precipitation of uranium is favored by the reducing conditions prevalent in the Black Sea. The ratio of thorium to uranium is low in the upper layers of the core sample, but rises to a value that is more typical of ocean deposits in the lower layers of the core sample (Th/U> 3). For the last 1500 years the rate of deposition in the Black Sea is estimated at 36 to 60 cm per 1000 years. This high rate of deposition accounts for the deficiency of radium in the Black Sea deposits. (TTT)
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-15-030962
OSTI ID:
4840740
Journal Information:
Doklady Akad. Nauk S.S.S.R., Journal Name: Doklady Akad. Nauk S.S.S.R. Vol. Vol: 139
Country of Publication:
Country unknown/Code not available
Language:
Russian

Similar Records

THE RATIO OF RADIOACTIVITIES IN DEPOSITS OF THE AZOV SEA AND OF THE BLACK SEA
Journal Article · Tue Jul 11 00:00:00 EDT 1961 · Doklady Akad. Nauk S.S.S.R. · OSTI ID:4842696
RADIOACTIVITY OF THE WATERS OF THE INDIAN OCEAN
Journal Article · Wed Dec 31 23:00:00 EST 1958 · Geokhimiya (U.S.S.R.) For English translation 1956-63 see Geochemistry (USSR) · OSTI ID:4208402
CONCERNING THE CONTENT OF RADIOACTIVE ELEMENTS FOUND IN WATERS OF OIL FIELD DEPOSITS
Journal Article · Tue Dec 31 23:00:00 EST 1957 · Geokhimiya (U.S.S.R.) For English translation 1956-63 see Geochemistry (USSR) · OSTI ID:4233692

Related Subjects

AGE ESTIMATION
DEPOSITS
DISTRIBUTION
GEOLOGY, MINERALOGY, AND METEOROLOGY
LAYERS
PRECIPITATION
QUANTITY RATIO
RADIOACTIVITY
RADIUM
REDUCTION
SEA
THORIUM 230
THORIUM 232
URANIUM