Strontium isotope geochemistry of soil and playa deposits near Yucca Mountain, Nevada

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The isotopic composition of strontium contained in the carbonate fractions of soils provides an excellent tracer which can be used to test models for their origin. This paper reports data on surface coatings and cements, eolian sediments, playas and alluvial fan soils which help to constrain a model for formation of the extensive calcretes and fault infilling in the Yucca Mountain region. The playas contain carbonate with a wide range of strontium compositions; further work will be required to fully understand their possible contributions to the pedogenic carbonate system. Soils from an alluvial fan to the west of Yucca Mountain ... continued below

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8 p.

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Marshall, B.D. & Mahan, S.A. December 31, 1994.

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The isotopic composition of strontium contained in the carbonate fractions of soils provides an excellent tracer which can be used to test models for their origin. This paper reports data on surface coatings and cements, eolian sediments, playas and alluvial fan soils which help to constrain a model for formation of the extensive calcretes and fault infilling in the Yucca Mountain region. The playas contain carbonate with a wide range of strontium compositions; further work will be required to fully understand their possible contributions to the pedogenic carbonate system. Soils from an alluvial fan to the west of Yucca Mountain show that only small amounts of strontium are derived from weathering of silicate detritus. However, calcretes from a fan draining a carbonate terrane have strontium compositions dominated locally by the limestone strontium component. Although much evidence points to an eolian source for at least some of the strontium in the pedogenic carbonates near Yucca Mountain, an additional component or past variation of strontium composition in the eolian source is required to model the pedogenic carbonate system.

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8 p.

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INIS; OSTI as DE96001464

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  • International high-level radioactive waste management conference, Las Vegas, NV (United States), 22-26 May 1994

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  • Other: DE96001464
  • Report No.: CONF-940553--98
  • Grant Number: AI08-92NV10874
  • Office of Scientific & Technical Information Report Number: 124918
  • Archival Resource Key: ark:/67531/metadc619388

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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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  • December 31, 1994

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  • June 16, 2015, 7:43 a.m.

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  • April 18, 2016, 7:11 p.m.

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Marshall, B.D. & Mahan, S.A. Strontium isotope geochemistry of soil and playa deposits near Yucca Mountain, Nevada, article, December 31, 1994; Denver, Colorado. (digital.library.unt.edu/ark:/67531/metadc619388/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.