气候变化领域集成服务门户(CCPortal): Pore fluid effects on elastic wave velocities of serpentinite and implications for estimates of serpentinization in oceanic lithosphere

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DOI	10.1016/j.tecto.2019.228309
	Pore fluid effects on elastic wave velocities of serpentinite and implications for estimates of serpentinization in oceanic lithosphere
	Hatakeyama K.; Katayama I.
发表日期	2020
ISSN	00401951
卷号	775
英文摘要	Recent seismic refraction surveys at various outer-rise regions have identified low seismic velocities in the uppermost mantle, which is indicative of mantle hydration (serpentinization) related to water infiltration along bending-related faults prior to subduction. Serpentinization could lead to the development of pore spaces during hydration reaction, which influences seismic velocity. Here, we measured the elastic wave velocity of low-temperature serpentinites with various porosities and reevaluated the degree of serpentinization of the oceanic mantle in outer-rise regions, accounting for pore fluid effects. Experimental results show that the elastic wave velocity of serpentinite decreases with increasing porosity. This relationship indicates that the estimated degree of serpentinization decreases with increasing serpentinite porosity. We then applied these experimental data to the geophysical observations of the outer-rise regions to reevaluate the amount and the type of water carried into Earth's interior at subduction systems. © 2019 Elsevier B.V.
关键词	Elastic wave velocity Mantle hydration Outer-rise region Porosity Serpentinite
英文关键词	Acoustic wave velocity; Hydration; Porosity; Seismic waves; Seismology; Structural geology; Temperature; Wave propagation; Elastic wave velocity; Geophysical observations; Oceanic lithosphere; Outer-rise region; Seismic refraction survey; Seismic velocities; Serpentinite; Water infiltration; Magnesite; elastic wave; hydration; oceanic lithosphere; porosity; seismic refraction; seismic wave; serpentinite; serpentinization; wave velocity
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207767
作者单位	Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima, 739-8526, Japan
推荐引用方式 GB/T 7714	Hatakeyama K.,Katayama I.. Pore fluid effects on elastic wave velocities of serpentinite and implications for estimates of serpentinization in oceanic lithosphere[J],2020,775.
APA	Hatakeyama K.,&Katayama I..(2020).Pore fluid effects on elastic wave velocities of serpentinite and implications for estimates of serpentinization in oceanic lithosphere.Tectonophysics,775.
MLA	Hatakeyama K.,et al."Pore fluid effects on elastic wave velocities of serpentinite and implications for estimates of serpentinization in oceanic lithosphere".Tectonophysics 775(2020).