气候变化领域集成服务门户(CCPortal): Faulting Processes Unveiled by Magnetic Properties of Fault Rocks

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DOI	10.1029/2019RG000690
	Faulting Processes Unveiled by Magnetic Properties of Fault Rocks
	Yang T.; Chou Y.-M.; Ferré E.C.; Dekkers M.J.; Chen J.; Yeh E.-C.; Tanikawa W.
发表日期	2020
ISSN	87551209
卷号	58 期号:4
英文摘要	As iron-bearing minerals—ferrimagnetic minerals in particular—are sensitive to stress, temperature, and presence of fluids in fault zones, their magnetic properties provide valuable insights into physical and chemical processes affecting fault rocks. Here, we review the advances made in magnetic studies of fault rocks in the past three decades. We provide a synthesis of the mechanisms that account for the magnetic changes in fault rocks and insights gained from magnetic research. We also integrate nonmagnetic approaches in the evaluation of the magnetic properties of fault rocks. Magnetic analysis unveils microscopic processes operating in the fault zones such as frictional heating, energy dissipation, and fluid percolation that are otherwise difficult to constrain. This makes magnetic properties suited as a “strain indicator,” a “geothermometer,” and a “fluid tracer” in fault zones. However, a full understanding of faulting-induced magnetic changes has not been accomplished yet. Future research should focus on detailed magnetic property analysis of fault zones including magnetic microscanning and magnetic fabric analysis. To calibrate the observations on natural fault zones, laboratory experiments should be carried out that enable to extract the exact physicochemical conditions that led to a certain magnetic signature. Potential avenues could include (1) magnetic investigations on natural and synthetic fault rocks after friction experiments, (2) laboratory simulation of fault fluid percolation, (3) paleomagnetic analysis of postkinematic remanence components associated with faulting processes, and (4) synergy of interdisciplinary approaches in mineral-magnetic studies. This would help to place our understanding of the microphysics of faulting on a much stronger footing. ©2020. The Authors.
英文关键词	earthquake; fault fluid; fault rocks; frictional heating; magnetic fabric; rock magnetism
语种	英语
来源期刊	Reviews of Geophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/188071
作者单位	Hubei Subsurface Multi-Scale Imaging Key Laboratory, Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, China; Paleomagnetic Laboratory Fort Hoofddijk, Department of Earth Sciences, Utrecht University, Utrecht, Netherlands; Now at School of Geophysics and Information Technology, China University of Geosciences, Beijing, China; Shenzhen Key Laboratory of Marine Archaea Geo-Omics, Department of Ocean Science and Engineering, South University of Science and Technology, Shenzhen, China; Southern Marine Science and Engineering Guangdong Laboratory, Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China; School of Geosciences, University of Louisiana at Lafayette, Lafayette, LA, United States; State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing, China; HPT Laboratory, Department of Earth Sciences, Utrecht University, Utrecht, Netherlands; Department of Earth Sciences, National...
推荐引用方式 GB/T 7714	Yang T.,Chou Y.-M.,Ferré E.C.,et al. Faulting Processes Unveiled by Magnetic Properties of Fault Rocks[J],2020,58(4).
APA	Yang T..,Chou Y.-M..,Ferré E.C..,Dekkers M.J..,Chen J..,...&Tanikawa W..(2020).Faulting Processes Unveiled by Magnetic Properties of Fault Rocks.Reviews of Geophysics,58(4).
MLA	Yang T.,et al."Faulting Processes Unveiled by Magnetic Properties of Fault Rocks".Reviews of Geophysics 58.4(2020).