DOI: 10.1016/j.epsl.2018.08.038
Scopus记录号: 2-s2.0-85053782009
论文题名: Biomarker thermal maturity experiments at earthquake slip rates
作者: Savage H.M. ; Rabinowitz H.S. ; Spagnuolo E. ; Aretusini S. ; Polissar P.J. ; Di Toro G.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 502 起始页码: 253
结束页码: 261
语种: 英语
英文关键词: fault mechanics
; high-velocity friction experiments
; paleoseismic indicators
Scopus关键词: Biomarkers
; Earthquakes
; Friction
; Reaction rates
; Fault mechanics
; Friction experiments
; High-velocity frictions
; Lower temperatures
; Methylphenanthrene
; Surrounding rock
; Temperature rise
; Thermal maturity
; Faulting
; biomarker
; earthquake mechanism
; experimental study
; fault zone
; friction
; paleoseismicity
; seismic velocity
; slip rate
; thermal maturity
; timescale
英文摘要: Evidence of temperature rise is useful for identifying where within a fault zone earthquake slip has occurred, as well as some attributes of the earthquake such as energy output. Biomarker thermal maturity can elucidate structures within a fault zone that were hotter than surrounding rock, and therefore likely to have hosted earthquakes. We performed a series of friction experiments on thin gouge layers of Woodford shale at slip rates of 1 m/s. Our results show that biomarker thermal maturity can clearly delineate zones of slip that are as thin as 150 μm. We establish that the kinetics of methylphenanthrene reaction previously determined at longer durations and lower temperatures are applicable at seismic slip rates and timescales. Temperature estimates show that once the slipping zone reached ∼500 °C, biomarker reaction was significant, as predicted by the reaction kinetics. Our results demonstrate that temperature rise in fault zones is a function of both the work density and power density during the earthquake. Biomarker reactions, along with other Arrhenius-style reactions such as those that lead to dynamic shear weakening, are both a function of slip speed and frictional work. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109637
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: Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10960, United States; Seismology and Tectonophysics, INGV, Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy; School of Earth and Environmental Sciences, The University of Manchester, Manchester, United Kingdom; Dipartimento di Geoscienze, Università degli Studi di Padova, Padua, Italy
Recommended Citation:
Savage H.M.,Rabinowitz H.S.,Spagnuolo E.,et al. Biomarker thermal maturity experiments at earthquake slip rates[J]. Earth and Planetary Science Letters,2018-01-01,502