Magnetic properties indicate the sources of hadal sediments in the Yap Trench, northwest Pacific Ocean

  • Yu Chen
  • Jichao YangEmail author
  • Olusegun A. Dada
  • Yaomin Yang
  • Zhen Lin
  • Zhen Cui
  • Yue Xu
  • Hongjun Yu
  • Baohua Liu


Magnetic minerals in marine sediments are often masked by the primary natural remanent magnetization and material source signals. In order to understand sedimentary environment and sources of sediments in the abyss, we studied 126 samples of five bottom surface cores collected by the Jiaolong Submersible at 4000–7000 m in depth during the third stage of the China’s 38th Ocean Voyage. The magnetic properties of the sediments were analyzed using Thermosusceptibility (k-T) curves and Day plot. The results show that the magnetic minerals in the sediments of the Yap Trench are mainly maghemite, and the overall magnetic and soft magnetic properties were strong. The magnetic particles of sediments are dominated by pseudo single domains (PSD) grains. The main source of sediment is locally-derived basalt debris and volcanic debris, and the process of sedimentation is gravity-like flow deposition.


magnetic property material resource hadal sediment Yap Trench 


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The authors would like to thank Professor Wang Weiguo and Dr Liu Jianxing for providing insightful comments on this paper, and the anonymous reviewers for their constructive comments and helpful suggestions, which have improved the manuscript.


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Copyright information

© Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Yu Chen
    • 1
    • 2
    • 4
  • Jichao Yang
    • 2
    Email author
  • Olusegun A. Dada
    • 3
  • Yaomin Yang
    • 2
  • Zhen Lin
    • 2
  • Zhen Cui
    • 2
  • Yue Xu
    • 2
  • Hongjun Yu
    • 2
  • Baohua Liu
    • 2
  1. 1.Institute of Deep Sea Science and EngineeringChinese Academy of ScienceSanyaChina
  2. 2.National Deep Sea CenterMinistry of Natural Resources (MNR)QingdaoChina
  3. 3.Dept. of Marine Science & TechnologyFederal University of TechnologyAkureNigeria
  4. 4.University of Chinese Academy of ScienceBeijingChina

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