DOI: 10.1002/grl.50170
论文题名: Magnetite deformation mechanism maps for better prediction of strain partitioning
作者: Till J.L. ; Moskowitz B.
刊名: Geophysical Research Letters
ISSN: 0094-9305
EISSN: 1944-9036
出版年: 2013
卷: 40, 期: 4 起始页码: 697
结束页码: 702
语种: 英语
英文关键词: deformation
; flow laws
; magnetite
Scopus关键词: Data flow analysis
; Deformation
; Ferrites
; Forecasting
; Magnetite
; Structural geology
; Titanium oxides
; Deformation behavior
; Deformation mechanism map
; Experimental deformation
; Flow law
; Moderate temperature
; Slow-spreading ridges
; Strain localizations
; Strain partitioning
; Creep
; creep
; crust
; data acquisition
; deformation
; ductility
; experimental study
; ferrite
; grain size
; low temperature
; magnetite
; meta-analysis
; strain partitioning
英文摘要: A meta-analysis of existing experimental deformation data for magnetite and other spinel-structured ferrites reveals that previously published flow laws are inadequate to describe the general deformation behavior of magnetite. Using updated rate equations for oxygen diffusion in magnetite, we present new flow laws that closely predict creep rates similar to those found in deformation experiments and that can be used to predict strain partitioning between cubic Fe oxides and other phases in the Earth's crust. New deformation mechanism maps for magnetite have been constructed as functions of temperature and grain size. Using the revised creep parameters, estimates of strain partitioning between magnetite, ilmenite, and plagioclase indicate that concentrated zones of Fe-Ti oxides in oceanic crust near slow-spreading ridges could accommodate significant amounts of strain at moderate temperatures and may contribute to aseismic creep along spreading-segment faults. Key Points New magnetite flow laws can help predict strain partitioning relationships Magnetite is predicted to be capable of significant low-temperature ductility FeTi-oxides may contribute to strain localization at slow-spreading ridges ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878181707&doi=10.1002%2fgrl.50170&partnerID=40&md5=fcd566b828f47f7860327d94293bf1b9
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6569
Appears in Collections: 气候减缓与适应
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作者单位: Institut de Minéralogie et de Physique des Milieux Condensés, Université Pierre et Marie Curie, Campus Jussieu, 4 Place Jussieu, 75005 Paris, France
Recommended Citation:
Till J.L.,Moskowitz B.. Magnetite deformation mechanism maps for better prediction of strain partitioning[J]. Geophysical Research Letters,2013-01-01,40(4).