Strontium isotope evolution of pore water and calcite in the Topopah Spring Tuff, Yucca Mountain, Nevada

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Pore water in the Topopah Spring Tuff has a narrow range of {delta}{sup 87}Sr values that can be calculated from the {delta}{sup 87}Sr values of the rock considering advection through and reaction with the overlying nonwelded tuffs of the PTn. This model can be extended to estimate the variation of {delta}{sup 87}Sr in the pore water through time; this approximates the variation of {delta}{sup 87}Sr measured in calcite fracture coatings. In samples of calcite where no silica can be dated by other methods, strontium isotope data may be the only method to determine ages. In addition, other Sr-bearing minerals in ... continued below

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4 p.

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Marshall, Brian D. & Futa, Kiyoto April 29, 2001.

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Description

Pore water in the Topopah Spring Tuff has a narrow range of {delta}{sup 87}Sr values that can be calculated from the {delta}{sup 87}Sr values of the rock considering advection through and reaction with the overlying nonwelded tuffs of the PTn. This model can be extended to estimate the variation of {delta}{sup 87}Sr in the pore water through time; this approximates the variation of {delta}{sup 87}Sr measured in calcite fracture coatings. In samples of calcite where no silica can be dated by other methods, strontium isotope data may be the only method to determine ages. In addition, other Sr-bearing minerals in the calcite and opal coatings, such as fluorite, may be dated using the same model.

Physical Description

4 p.

Notes

INIS; OSTI as DE00794109

Medium: P; Size: 4 pages

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  • 2001 International High-Level Radioactive Waste Management Conference, Las Vegas, NV (US), 04/29/2001--05/03/2001

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  • Report No.: NONE
  • Grant Number: AI08-97NV12033
  • Office of Scientific & Technical Information Report Number: 794109
  • Archival Resource Key: ark:/67531/metadc734730

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  • April 29, 2001

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  • Oct. 19, 2015, 7:39 p.m.

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  • April 10, 2017, 8:30 p.m.

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Marshall, Brian D. & Futa, Kiyoto. Strontium isotope evolution of pore water and calcite in the Topopah Spring Tuff, Yucca Mountain, Nevada, article, April 29, 2001; Denver, Colorado. (digital.library.unt.edu/ark:/67531/metadc734730/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.