中文版 | English
Title

Interpretation of Anhysteretic Remanent Magnetization Carriers in Magnetofossil-Rich Marine Sediments

Author
Corresponding AuthorZhang,Qiang; Liu,Qingsong
Publication Years
2022-11-01
DOI
Source Title
ISSN
2169-9313
EISSN
2169-9356
Volume127Issue:11
Abstract
The anhysteretic remanent magnetization (ARM) is an important magnetic parameter for quantifying the concentration of “fine”, mostly sub-micron ferrimagnetic particles in rocks and sediments. A sound understanding of ARM carriers is needed to interpret magnetic and environmental information in sedimentary archives. This is often not achieved for marine sediments, which routinely contain several magnetic mineral components. Here, we analyze marine sediment records over different timescales for four sediment cores from the Eastern Pacific Ocean (Hole 1218A), the Antarctic margin (core P4-1), the Arctic Ocean (core ARC5-ICE4), and the South China Sea (core L07), using coercivity spectra analyses of ARM, first-order reversal curve principal component analysis (FORC-PCA), transmission electron microscopy (TEM), and unmixing of isothermal remanent magnetization (IRM) curves. By combining rock magnetic and TEM results, we find that the ARM is mainly carried by non-interacting single domain (SD) biogenic magnetite (magnetofossils) in the studied sediments over all timescales. Low-coercivity magnetic particles (detrital and fine-grained extracellular magnetite) also contribute to the bulk ARM. Variable magnetofossil chain structures are detected and have a significant influence on ARM data interpretation. Quantitative FORC-PCA endmember analyses based on quantile contours and coercivity distributions provide valuable information on the nature of endmembers and improve ARM data interpretation. We provide an integrated strategy to help reduce interpretational ambiguities related to ARM in future studies.
Keywords
URL[Source Record]
Indexed By
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
Corresponding
Funding Project
China Postdoctoral Science Foundation[2020M680026];National Natural Science Foundation of China[41876070];National Natural Science Foundation of China[41920104009];National Natural Science Foundation of China[42104076];National Postdoctoral Program for Innovative Talents[BX20200332];Australian Research Council[DP200100765];
WOS Research Area
Geochemistry & Geophysics
WOS Subject
Geochemistry & Geophysics
WOS Accession No
WOS:000928052400021
Publisher
ESI Research Field
GEOSCIENCES
Scopus EID
2-s2.0-85142883723
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/416516
DepartmentDepartment of Ocean Science and Engineering
Affiliation
1.State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China
2.Research School of Earth Sciences,Australian National University,Canberra,Australia
3.Key Laboratory of Marine Geology and Metallogeny,First Institute of Oceanography,MNR,Qingdao,China
4.Laboratory for Marine Geology,Pilot National Laboratory for Marine Science and Technology,Qingdao,China
5.Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,China
Corresponding Author AffilicationDepartment of Ocean Science and Engineering
Recommended Citation
GB/T 7714
Zhang,Qiang,Roberts,Andrew P.,Ge,Shulan,et al. Interpretation of Anhysteretic Remanent Magnetization Carriers in Magnetofossil-Rich Marine Sediments[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2022,127(11).
APA
Zhang,Qiang.,Roberts,Andrew P..,Ge,Shulan.,Liu,Yanguang.,Liu,Jianxing.,...&Liu,Qingsong.(2022).Interpretation of Anhysteretic Remanent Magnetization Carriers in Magnetofossil-Rich Marine Sediments.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,127(11).
MLA
Zhang,Qiang,et al."Interpretation of Anhysteretic Remanent Magnetization Carriers in Magnetofossil-Rich Marine Sediments".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 127.11(2022).
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