Thermoluminescence dating of soils in a semi-arid environment, Yucca Mountain area, Southern Nevada, USA

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Yucca Mountain, Nevada, is currently being investigated as a potential nuclear waste repository. Because radionuclides must be isolated over a ten to several hundred thousand year time span, an assessment of the performance depends in part on accurate reconstruction of the Quaternary geologic and hydrologic history of the mountain. Reliable geochronology in an oxidizing environment dominated by coarse-grained, clastic surficial deposits has become a central issue for several studies including paleoseismic reconstruction, determination of rates of erosion and deposition, and the history of regional water-table fluctuations documented by ground-water discharge deposits. Thermoluminescence (TL) dating of polymineralic silt fractions in a ... continued below

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4 p.

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Mahan, S.A.; Paces, J.B. & Peterman, Z.E. December 31, 1995.

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Yucca Mountain, Nevada, is currently being investigated as a potential nuclear waste repository. Because radionuclides must be isolated over a ten to several hundred thousand year time span, an assessment of the performance depends in part on accurate reconstruction of the Quaternary geologic and hydrologic history of the mountain. Reliable geochronology in an oxidizing environment dominated by coarse-grained, clastic surficial deposits has become a central issue for several studies including paleoseismic reconstruction, determination of rates of erosion and deposition, and the history of regional water-table fluctuations documented by ground-water discharge deposits. Thermoluminescence (TL) dating of polymineralic silt fractions in a variety of surface deposits has become an important component of the Quaternary dating strategy, along with uranium-series disequilibrium dating of secondary carbonate and opaline silica, and to a lesser extent, radiocarbon dating of carbonate components. Although the complex mineralogy of these materials contributes to greater amounts of scatter in their TL response relative to typical quartzofeldspathic loess and dune deposits, the derived ages are reproducible, consistent with internal stratigraphy, and generally concordant with other available geochronology.

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4 p.

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INIS; OSTI as DE96009869

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  • Luminescence and ESR research seminar, Sussex (United Kingdom), 19-20 Dec 1995

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  • Other: DE96009869
  • Report No.: CONF-951279--1
  • Grant Number: AI08-92NV10874
  • Office of Scientific & Technical Information Report Number: 231941
  • Archival Resource Key: ark:/67531/metadc672544

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • April 18, 2016, 7:12 p.m.

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Mahan, S.A.; Paces, J.B. & Peterman, Z.E. Thermoluminescence dating of soils in a semi-arid environment, Yucca Mountain area, Southern Nevada, USA, article, December 31, 1995; Denver, Colorado. (digital.library.unt.edu/ark:/67531/metadc672544/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.