Oklo natural fission reactor program. Progress report, April 1-August 31, 1980
- comp.
An interim report has been published on the redistribution of uranium, thorium, and lead in samples representing several million cubic meters of sandstone and metamorphosed sediments in the Athabasca Basin which is located in the northwest corner of the Canadian province of Saskatchewan. The region of study includes zones of uranium mineralization at Key Lake. Mineralization occurs at the unconformity between the Athabasca sandstone and the underlying metasediments and in fault zones within the metasediments. Lead isotopes record a radiometric age of 1300 +- 150 m.y. in samples from above and below the unconformity. This age probably reflects the time of deposition of the sandstones and an associated redistribution of uranium and/or lead in the underlying rocks. Many of the samples have been fractionated with respect to radiogenic lead and the actinide parent elements since that time. Sandstones and altered rocks from the region above the unconformity have been a transport path and are a repository for lead. In contrast, mineralized rocks are deficient in radiogenic lead and must be an important source of lead in the local geologic environment. Samples from Oklo reactor zone 9 and nearby host rocks have been prepared for isotopic analyses of ruthenium, molybdenum, uranium and lead.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6738438
- Report Number(s):
- LA-8644-PR; TRN: 81-002512
- Country of Publication:
- United States
- Language:
- English
Similar Records
Natural repository analouge program. Progress report, January 1-March 31, 1981
Uranium-lead method of age determination. Part II. North American localities
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54 ENVIRONMENTAL SCIENCES
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
LEAD
ENVIRONMENTAL TRANSPORT
LEAD 204
ISOTOPE RATIO
LEAD 206
LEAD 207
LEAD 208
OKLO PHENOMENON
RESEARCH PROGRAMS
THORIUM
URANIUM
DELAYED NEUTRON ANALYSIS
DRILL CORES
EXPERIMENTAL DATA
GEOLOGY
LAKES
MINERALIZATION
ROCKS
SAMPLING
SANDSTONES
SASKATCHEWAN
SEDIMENTS
URANIUM DEPOSITS
ACTINIDES
ALPHA DECAY RADIOISOTOPES
CANADA
CHEMICAL ANALYSIS
DATA
ELEMENTS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
GEOLOGIC DEPOSITS
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
INFORMATION
ISOMERIC TRANSITION ISOTOPES
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MASS TRANSFER
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NORTH AMERICA
NUCLEAR REACTION ANALYSIS
NUCLEI
NUMERICAL DATA
RADIOISOTOPES
RESOURCES
SECONDS LIVING RADIOISOTOPES
SEDIMENTARY ROCKS
STABLE ISOTOPES
SURFACE WATERS
YEARS LIVING RADIOISOTOPES
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