Isotope tracer studies of diffusion in silicates and of geological transport processes in aqueous systems using actinide elements
This research program has moved ahead with success in several areas. The isotopic composition of osmium in seawater and in some rivers was directly determined for the first time. The concentration of osmium was first estimated in both seawater and rivers. A major effort was directed toward the transport of the U,Th series nuclides in a watershed in Sweden. A serious effort was directed at developing a transport model for the U,Th series nuclides in aquifers. A detailed study of {sup 238}U-{sup 230}Th dating of a cave in Israel was carried out collaboratively. The Os-Re fractionation between silicate and sulfide melts were determined in MORB basalts and glasses and the isotopic composition of Os was measured in sulfide samples.
- Research Organization:
- California Inst. of Tech., Div. of Geological and Planetary Sciences, Pasadena, CA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- FG03-88ER13851
- OSTI ID:
- 314168
- Report Number(s):
- DOE/ER/13851-T3; ON: DE99001724; TRN: 99:003252
- Resource Relation:
- Other Information: PBD: [1999]
- Country of Publication:
- United States
- Language:
- English
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Isotope tracer studies of diffusion in silicates and of geological transport processes using actinide elements
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