U-Series Transport Studies at the Pena Blanca, Mexico Natural Analog Site

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Description

Natural analogs provide a line of evidence that supports the understanding of how natural and engineered processes would occur over long time frames and large spatial scales at a potential nuclear waste repository at Yucca Mountain, Nevada. Studies of U-series disequilibria within and around uranium deposits can provide valuable information on the timing of actinide mobility and hence the stability of a potential repository over geologic time scales. The Nopal I uranium deposit at Pena Blanca, Mexico, is situated in unsaturated tuff that is similar in composition to the Topopah Spring Tuff of Yucca Mountain and closely matches other evaluation ... continued below

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3 pages

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Simmons, A. M. & Murrell, M. T. May 31, 2001.

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Description

Natural analogs provide a line of evidence that supports the understanding of how natural and engineered processes would occur over long time frames and large spatial scales at a potential nuclear waste repository at Yucca Mountain, Nevada. Studies of U-series disequilibria within and around uranium deposits can provide valuable information on the timing of actinide mobility and hence the stability of a potential repository over geologic time scales. The Nopal I uranium deposit at Pena Blanca, Mexico, is situated in unsaturated tuff that is similar in composition to the Topopah Spring Tuff of Yucca Mountain and closely matches other evaluation criteria for suitable natural analogs. By modeling the observed radioactive isotope disequilibria at Nopal I, we can estimate the rates of sorption-desorption and dissolution-precipitation of the radionuclides over time. Such information is vital to the testing or validation of performance assessment models for geologic nuclear waste disposal.

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3 pages

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INIS; OSTI as DE00786560

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  • Other Information: PBD: 31 May 2001

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  • Report No.: MOL.20010808.0258
  • Grant Number: NONE
  • DOI: 10.2172/786560 | External Link
  • Office of Scientific & Technical Information Report Number: 786560
  • Archival Resource Key: ark:/67531/metadc717092

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • May 31, 2001

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • Feb. 11, 2016, 1:07 p.m.

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Simmons, A. M. & Murrell, M. T. U-Series Transport Studies at the Pena Blanca, Mexico Natural Analog Site, report, May 31, 2001; Las Vegas, Nevada. (digital.library.unt.edu/ark:/67531/metadc717092/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.