Mineralogic alteration history and paleohydrology at Yucca Mountain, Nevada

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The importance of paleohydrology to the Yucca Mountain Site Characterization Project derives from the role water will play in radioactive-waste repository performance. Changes in hydrologic conditions during the lifetime of the repository may be estimated by investigating past hydrologic variations, including changes in the static water-level position. Based on the distribution of vitric and zeolitized tuffs and the structural history of the site, the highest water levels were reached and receded downward 11.6 to 12.8 myr ago. Since that time, the water level at central Yucca Mountain has probably not risen more than about 60 m above its present position. ... continued below

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22 p.

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Levy, S.S. December 31, 1990.

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Description

The importance of paleohydrology to the Yucca Mountain Site Characterization Project derives from the role water will play in radioactive-waste repository performance. Changes in hydrologic conditions during the lifetime of the repository may be estimated by investigating past hydrologic variations, including changes in the static water-level position. Based on the distribution of vitric and zeolitized tuffs and the structural history of the site, the highest water levels were reached and receded downward 11.6 to 12.8 myr ago. Since that time, the water level at central Yucca Mountain has probably not risen more than about 60 m above its present position. The history of the high potentiometric gradient running through northern Yucca Mountain may be partly elucidated by the study of tridymite distribution in rocks that have experienced saturated conditions for varying periods of time.

Physical Description

22 p.

Notes

INIS; OSTI as DE91005941

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  • 2. annual American Nuclear Society (ANS) international high level radioactive waste management conference, Las Vegas, NV (United States), 28 Apr - 3 May 1991

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  • Other: DE91005941
  • Report No.: LA-UR--90-4388
  • Report No.: CONF-910435--22
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 137986
  • Archival Resource Key: ark:/67531/metadc619602

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 31, 1990

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 25, 2016, 8:59 p.m.

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Levy, S.S. Mineralogic alteration history and paleohydrology at Yucca Mountain, Nevada, article, December 31, 1990; New Mexico. (digital.library.unt.edu/ark:/67531/metadc619602/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.