气候变化领域集成服务门户(CCPortal): Permeability Profiles Across the Crust-Mantle Sections in the Oman Drilling Project Inferred From Dry and Wet Resistivity Data

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DOI	10.1029/2019JB018698
	Permeability Profiles Across the Crust-Mantle Sections in the Oman Drilling Project Inferred From Dry and Wet Resistivity Data
	Katayama I.; Abe N.; Hatakeyama K.; Akamatsu Y.; Okazaki K.; Ulven O.I.; Hong G.; Zhu W.; Cordonnier B.; Michibayashi K.; Godard M.; Kelemen P.
发表日期	2020
ISSN	21699313
卷号	125 期号:8
英文摘要	Permeability profiles in the crust-mantle sequences of the Samail ophiolite were constructed based on onboard measurements of the electrical resistivity of cores recovered during the Oman Drilling Project. For each sample, we measured dry and brine-saturated resistivity during the description campaign on the drilling vessel Chikyu. Owing to the conductive brine in the pore space, wet resistivity is systematically lower than dry resistivity. The difference between dry and wet resistivity is attributed to the movement of dissolved ions in brine that occupies the pore space. We applied effective medium theory to calculate the volume fraction of pores that contribute to electrical transport. Using an empirical cubic law between transport porosity and permeability, we constructed permeability profiles for the crust-mantle transition zone and the serpentinized mantle sections in the Samail ophiolite. The results indicate that (1) the gabbro sequence has a markedly lower permeability than the underlying mantle sequence; (2) serpentinized dunites have higher permeability than serpentinized harzburgites; and (3) discrete sample permeability is correlated with ultrasonic velocity, suggesting that the permeability variations predominately reflect crack density and geometry. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	oceanic lithosphere; Oman; ophiolite; permeability; resistivity; serpentinite
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187693
作者单位	Department of Earth and Planetary Systems Science, Hiroshima University, Hiroshima, Japan; Mantle Drilling Promotion Office, MarE3, JAMSTEC, Kanagawa, Japan; Kochi Institute for Core Sample Research, JAMSTEC, Kochi, Japan; Department of Geosciences, University of Oslo, Oslo, Norway; Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Department of Geology, University of Maryland, College Park, MD, United States; Department of Earth and Planetary Sciences, Nagoya University, Aichi, Japan; Géosciences Montpellier, CNRS, Université de Montpellier, Montpellier, France; Lamont Doherty Earth Observatory, Columbia University, New York, NY, United States
推荐引用方式 GB/T 7714	Katayama I.,Abe N.,Hatakeyama K.,et al. Permeability Profiles Across the Crust-Mantle Sections in the Oman Drilling Project Inferred From Dry and Wet Resistivity Data[J],2020,125(8).
APA	Katayama I..,Abe N..,Hatakeyama K..,Akamatsu Y..,Okazaki K..,...&Kelemen P..(2020).Permeability Profiles Across the Crust-Mantle Sections in the Oman Drilling Project Inferred From Dry and Wet Resistivity Data.Journal of Geophysical Research: Solid Earth,125(8).
MLA	Katayama I.,et al."Permeability Profiles Across the Crust-Mantle Sections in the Oman Drilling Project Inferred From Dry and Wet Resistivity Data".Journal of Geophysical Research: Solid Earth 125.8(2020).