Radionuclide Transport in a Dolomite Aquifer
The most probable paths for radionuclide transport between the biosphere and the proposed bedded salt repository (WIPP) in southeastern New Mexico are through dolomite formations which are the only currently water-bearing units overlying the repository horizon. This paper describes some of the experimental work performed to determine the potential for radionuclide migration in these formations. Included are the results of radionuclide sorption studies on natural dolomites (Magenta and Culebra) and on synthetic dolomite (proto-dolomite). Sorption on natural dolomites was evaluated with respect to core sample location, ground water composition, nuclide concentration and water volume to rock mass ratios used in making the measurements. The results show that a discrete value such as a distribution coefficient (Kd) assigned to a given radionuclide does not accurately describe its interactions with site specific geological formation.
KeywordsClay Migration Radionuclide Dolomite Montmorillonite
Unable to display preview. Download preview PDF.
- 1.R. G. Dosch and A. W. Lynch, Interaction of Radionuclides with Geomedia Associated with the WIPP Site in New Mexico SAND780297, June (1978).Google Scholar
- 2.S. J. Lambert and J. W. Mercer, Hydrologic Investigations of the Los Medanos Area, Southeastern New Mexico, 1977 SAND77–1401, Jan. (1978).Google Scholar
- 3.D. W. Powers, S. J. Lambert, S. E. Shaffer, L. R. Hill and D. W. Weart, Geologic Characterization Report, WIPP Site, Southeastern New Mexico, SAND78–1596 (1978).Google Scholar
- 4.R. G. Dosch and A. W. Lynch (to be published in a SAND report).Google Scholar
- 5.T. E. Hinkebein and P. F. Hlava, Microstructural Interactions of Geologic Media with Waste Radionuclides SAND78–0108 March (1978).Google Scholar
- 6.A. M. Gaines, “Proto-dolomite Synthesis at 100°C and Atmospheric Pressure,” Science 183, 518 (1974).Google Scholar
- 7.G. Baron, “The Synthesis of Dolomite; Application to the Phenomenon of Dolomitization,” Rev. Inst. Fr. Petrole, 15, 3–68 (1960).Google Scholar
- 8.F. R. Siegel, “Factors Influencing the Precipitation of Dolomitic Carbonates,” State Geological Survey of Kansas Bulletin 152, 1961 Reports of Studies, Part 5 127–158, December (1961).Google Scholar
- 9.S. Y. Shaio, P. Rafferty and R. E. Meyer, “Ion Exchange from the Los Medanos Area in Southeastern New Mexico,” 1979 Annual Meeting of the American Nuclear Society, Atlanta, Georgia, June 3–8 (1979).Google Scholar
- 10.A. W. Lynch and R. G. Dosch, “Migration of Cesium in Dolomite from the Los Medanos Area in Southeastern New Mexico,” 1979 Annual Meeting of the American Nuclear Society, Atlanta, Georgia, June 3–8 (1979).Google Scholar