DOI: 10.1002/2016GL070876
论文题名: Release of radiogenic noble gases as a new signal of rock deformation
作者: Bauer S.J. ; Gardner W.P. ; Lee H.
刊名: Geophysical Research Letters
ISSN: 0094-8498
EISSN: 1944-8229
出版年: 2016
卷: 43, 期: 20 起始页码: 10688
结束页码: 10694
语种: 英语
英文关键词: deformation
; gas release
; geomechanics
; mass spectrometry
; noble gases
; tracers
Scopus关键词: Deformation
; Forecasting
; Gases
; Geomechanics
; Helium
; Mass spectrometry
; Minerals
; Radioactive tracers
; Radiogenic gases
; Rocks
; Spectrometry
; Analytical systems
; Deformation process
; Earthquake prediction
; Engineering project
; Gas release
; Mechanical deformation
; Noble gas isotopes
; Small-scale strains
; Inert gases
英文摘要: In this study we investigate the release of radiogenic noble gas isotopes during mechanical deformation. We developed an analytical system for dynamic mass spectrometry of noble gas composition and helium release rate of gas produced during mechanical deformation of rocks. Our results indicate that rocks release accumulated radiogenic helium and argon from mineral grains as they undergo deformation. We found that the release of accumulated 4He and 40Ar from rocks follows a reproducible pattern and can provide insight into the deformation process. Increased gas release can be observed before dilation, and macroscopic failure is observed during high-pressure triaxial rock deformation experiments. Accumulated radiogenic noble gases can be released due to fracturing of mineral grains during small-scale strain in Earth materials. Helium and argon are highly mobile, conservative species and could be used to provide information on changes in the state of stress and strain in Earth materials, and as an early warning signal of macroscopic failure. These results pave the way for the use of noble gases to trace and monitor rock deformation for earthquake prediction and a variety of other subsurface engineering projects. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84995550702&doi=10.1002%2f2016GL070876&partnerID=40&md5=563a08807988aa4f39c9c3c440447591
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9461
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Geomechanics Department, Sandia National Laboratories, Albuquerque, NM, United States
Recommended Citation:
Bauer S.J.,Gardner W.P.,Lee H.. Release of radiogenic noble gases as a new signal of rock deformation[J]. Geophysical Research Letters,2016-01-01,43(20).