Radionuclides in hydrothermal systems as indicators of repository conditions [electronic resource].
- Berkeley, Calif. : Lawrence Berkeley National Laboratory, 1990.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 11 pages : digital, PDF file
- Additional Creators:
- Lawrence Berkeley National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Hydrothermal systems in tuffaceous and older sedimentary rocks contain evidence of the interaction of radionuclides in fluids with rock matrix minerals and with materials lining fractures, in settings somewhat analogous to the candidate repository site at Yucca Mountain, NV. Earlier studies encompassed the occurrences of U and Th in a ``fossil`` hydrothermal system in tuffaceous rock of the San Juan Mountains volcanic field, CO. More recent and ongoing studies examine active hydrothermal systems in calderas at Long Valley, CA and Valles, NM. At the Nevada Test Site, occurrences of U and Th in fractured and unfractured rhyolitic tuff that was heated to simulate the introduction of radioactive waste are also under investigation. Observations to date suggest that U is mobile in hydrothermal systems, but that localized reducing environments provided by Fe-rich minerals and/or carbonaceous material concentrate U and thus attenuate its migration. 11 refs., 6 figs., 1 tab.
- Report Numbers:
- E 1.99:lbl--29867
E 1.99: conf-901105--108
- Other Subject(s):
- Hydrothermal Systems
- Radionuclide Migration
- High-Level Radioactive Wastes
- Underground Disposal
- Radioecological Concentration
- Fission Tracks
- Long Valley
- Gamma Spectrometers
- Nevada Test Site
- Yucca Mountain
- Radiation Heating
- Reducing Agents
- Radioactive Effluents
- Environmental Transport
- Yucca Mountain Project
- Published through SciTech Connect.
Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 24 Nov - 1 Dec 1990.
Smith, A.R.; Wollenberg, H.A.; Flexser, S.
- Funding Information:
View MARC record | catkey: 14147540