Advances in Earth Science ›› 2023, Vol. 38 ›› Issue (2): 125-136. doi: 10.11867/j.issn.1001-8166.2022.103

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Astronomical Tuning and Calibration for Age Model of Pelagic Fe-Mn Crust: Methods and Application

Dongshan GUO 1 , 2( ), Xiqiu HAN 1 , 2 , 3( ), Weijia FAN 2, Zhongyan QIU 2, Mou LI 2, Yaxin RONG 1 , 2   

  1. 1.Ocean College, Zhejiang University, Zhoushan Zhejiang 316021, China
    2.Key Laboratory of Submarine Geosciences, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
    3.School of Oceanography, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2022-10-18 Revised:2022-12-07 Online:2023-02-10 Published:2023-03-02
  • Contact: Xiqiu HAN;
  • About author:GUO Dongshan (1998-), female, Lüliang City, Shanxi Province, Master student. Research areas include polymetalic crusts and paleoceanography. E-mail:
  • Supported by:
    the National Natural Science Foundation of China “High-resolution geochemical records of seamount crusts: evolution of meridional circulation in the Central North Pacific since Pliocene”(41606061);The “Ten-thousand Talents Plan” of Zhejiang Province(2018R51003)

Dongshan GUO, Xiqiu HAN, Weijia FAN, Zhongyan QIU, Mou LI, Yaxin RONG. Astronomical Tuning and Calibration for Age Model of Pelagic Fe-Mn Crust: Methods and Application[J]. Advances in Earth Science, 2023, 38(2): 125-136.

Ferromanganese crusts on seamounts are critical archives of the evolutionary history of paleo-oceanic environmental history, and a high-resolution age framework is essential for interpreting the information therein. Several approaches are available for determining the age of crusts, however, each still has limitations in terms of the time scale, resolution, or precision. The Earth orbital pacing method in combination with astronomical tuning can provide an effective way to establish a high-resolution age framework for crusts, which offers the possibility of using crusts to study the 10 000-year-scale evolution of paleo-climatic and paleo-oceanic environments. This study first briefly reviews the existing dating methods for crusts, then introduces in detail the Earth orbital pacing method combined with astronomical tuning and examines the applicability and reliability of various astronomical tests and tuning methods in crusts. The investigation of the specific influence mechanism of astronomical signals, the selection of suitable environmental proxies, and the high-resolution extraction of their spatial series are considered to be the most important directions for the establishment of a reliable age framework for crusts using the Earth orbital pacing method.

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