DOI: 10.1016/j.epsl.2018.08.032
Scopus记录号: 2-s2.0-85053189921
论文题名: 4D porosity evolution during pressure-solution of NaCl in the presence of phyllosilicates
作者: Macente A. ; Fusseis F. ; Butler I.B. ; Tudisco E. ; Hall S.A. ; Andò E.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 502 起始页码: 115
结束页码: 125
语种: 英语
英文关键词: digital volume correlation
; geochemical self-organization
; phyllosilicates
; pressure-solution creep
; X-ray microtomography
Scopus关键词: Creep
; Geochemistry
; Mica
; Porosity
; Silicates
; Sodium chloride
; Tomography
; X rays
; Digital volume correlations
; phyllosilicates
; Pressure-solution creep
; Self organizations
; X ray microtomography
; Strain rate
; creep
; crustal deformation
; experimental mineralogy
; four-dimensional modeling
; phyllosilicate
; porosity
; pressure effect
; pressure field
; sodium chloride
; X-ray analysis
英文摘要: Pressure-solution creep is one of the most common crustal deformation mechanisms, inducing changes in the porosity and permeability of rocks. For a variety of rock types undergoing pressure solution, it has been shown that the presence of phyllosilicates may significantly enhance the rate of the pressure-solution process. In this experimental investigation, we present 4-dimensional (three dimensions + time) X-ray microtomographic data that contrast deformation by pressure-solution of a pure NaCl aggregate with that of a mixture of NaCl and biotite. The results show that for mixed samples (NaCl+biotite), phyllosilicates induce a marked reduction in porosity and pore connectivity and contribute to an increase in the local strain rates by an order of magnitude over pure NaCl samples. At the same time, phyllosilicates do not induce strain localization in the sample. We discuss various possible explanations for these observations including a possible positive feedback between the porosity distribution and pressure solution. Our study yields novel insights into the local effects of phyllosilicates during pressure-solution creep and provides full 4-dimensional imaging and characterization of the coupled evolution of porosity and pore connectivity over previously unprecedented experimental time scales. © 2018 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109643
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: University of Edinburgh, School of Geosciences, The King's Buildings, James Hutton Road, Edinburgh, EH9 3FE, United Kingdom; Lund University, Division of Geotechnical Engineering, John Ericssons väg 1, Lund, Sweden; Lund University, Department of Solid Mechanics, Ole Römers väg 1, Lund, 223 63, Sweden; Univ. Grenoble Alpes, CNRS, Grenoble INP, 3SR, Grenoble, F-38000, France
Recommended Citation:
Macente A.,Fusseis F.,Butler I.B.,et al. 4D porosity evolution during pressure-solution of NaCl in the presence of phyllosilicates[J]. Earth and Planetary Science Letters,2018-01-01,502