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DOI	10.1016/j.epsl.2020.116241
	Response of remanent magnetization to deformation in geological processes using 3D-printed structures
	Liu P.; Gervasoni S.; Madonna C.; Gu H.; Coppo A.; Pané S.; Hirt A.M.
发表日期	2020
ISSN	0012821X
卷号	539
英文摘要	Palaeogeographic reconstructions and construction of apparent polar wander paths are dependent on having reliable palaeomagnetic directions. The importance of inclination flattening in biasing the palaeomagnetic record has been debated for over 60 yrs. Correction for this effect often assumes that the palaeomagnetic vector deforms as a passive line. In a novel approach using 3D printed analogue rocks, we revisit the question of how a palaeomagnetic vector responds to deformation, specifically compaction. Maghaemite nanoparticles were mixed in the printing resin with a concentration of 0.15 wt. %, and five series of cylinders with 1 cm height and diameter were printed with porosities between 0% and 20%. Samples were given an anhysteretic remanent magnetization, and were subjected subsequently to incremental compaction. The magnetic fabric shows an initially weak compaction in the printing plane that becomes larger with increased compaction. The palaeomagnetic inclination changes according to the strain that the sample undergoes, and the amount of deflection is less than predicted by a passive line model of deformation. Our results demonstrate that using a single correction factor for inclination flattening is questionable, and show the need for a method that considers how the rock deforms. Further we demonstrate the usefulness of 3D printed analogue rock, which can inspire more realistic methods to correct for inclination flattening. © 2020 Elsevier B.V.
关键词	3D printing inclination flattening palaeogeographic reconstructions rheology
英文关键词	Compaction; Deformation; Geomagnetism; Magnetization; Rheology; 3-D printing; Anhysteretic remanent magnetizations; Correction factors; Geological process; inclination flattening; Incremental compaction; Printed structures; Remanent magnetization; 3D printers; analog model; compaction; deformation mechanism; magnetic inclination; paleogeography; paleomagnetism; reconstruction; remanent magnetization; rheology
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202749
作者单位	Institute of Geophysics, ETH Zürich, Sonneggstrasse 5, Zürich, CH-8092, Switzerland; State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau, China; Institute of Robotics, Intelligent Systems, ETH Zürich, Sonneggstrasse 5, Zürich, CH-8092, Switzerland; Geological Institute, ETH Zürich, Sonneggstrasse 5, Zürich, CH-8092, Switzerland
推荐引用方式 GB/T 7714	Liu P.,Gervasoni S.,Madonna C.,et al. Response of remanent magnetization to deformation in geological processes using 3D-printed structures[J],2020,539.
APA	Liu P..,Gervasoni S..,Madonna C..,Gu H..,Coppo A..,...&Hirt A.M..(2020).Response of remanent magnetization to deformation in geological processes using 3D-printed structures.Earth and Planetary Science Letters,539.
MLA	Liu P.,et al."Response of remanent magnetization to deformation in geological processes using 3D-printed structures".Earth and Planetary Science Letters 539(2020).