Pore-scale spectral induced polarization (SIP) signaturesassociated with FeS biomineral transformations

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The authors measured Spectral Induced Polarization (SIP) signatures in sand columns during (1) FeS biomineralization produced by sulfate reducing bacteria (D. vulgaris) under anaerboci conditions, and (2) subsequent biomineral dissolution upon return to an aerobic state. The low-frequency (0.1-10 Hz peak) relaxations produced during biomineralization can be modeled with a Cole-Cole formulation, from which the evolution of the polarization magnitude and relaxation length scale can be estimated. They find that the modeled time constant is consistent with the polarizable elements being biomineral encrused pores. Evolution of the model parameters is consistent with FeS surface area increases and pore-size reduction during ... continued below

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Slater, Lee; Ntarlagiannis, Dimitrios; Personna, Yves R. & Hubbard, Susan October 1, 2007.

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The authors measured Spectral Induced Polarization (SIP) signatures in sand columns during (1) FeS biomineralization produced by sulfate reducing bacteria (D. vulgaris) under anaerboci conditions, and (2) subsequent biomineral dissolution upon return to an aerobic state. The low-frequency (0.1-10 Hz peak) relaxations produced during biomineralization can be modeled with a Cole-Cole formulation, from which the evolution of the polarization magnitude and relaxation length scale can be estimated. They find that the modeled time constant is consistent with the polarizable elements being biomineral encrused pores. Evolution of the model parameters is consistent with FeS surface area increases and pore-size reduction during biomineral growth, and subsequent biomineral dissolution (FeS surface area decreases and pore expansion) upon return to the aerobic state. They conclude that SIP signatures are diagnostic of pore-scale geometrical changes associated with FeS biomineralization by sulfate reducing bacteria.

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  • Journal Name: Geophysial Reserch Letters; Journal Volume: 34; Related Information: Journal Publication Date: 2007

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  • Report No.: LBNL--63768
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.1029/2007GL031840 | External Link
  • Office of Scientific & Technical Information Report Number: 925605
  • Archival Resource Key: ark:/67531/metadc900556

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  • October 1, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Sept. 25, 2017, 3:52 p.m.

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Slater, Lee; Ntarlagiannis, Dimitrios; Personna, Yves R. & Hubbard, Susan. Pore-scale spectral induced polarization (SIP) signaturesassociated with FeS biomineral transformations, article, October 1, 2007; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc900556/: accessed March 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.