New archaeointensity results from ～7 ka in Eastern China and their constraint on the regional variations of the geomagnetic field

doi:10.1093/gji/ggaf202

IVPP-IR

	New archaeointensity results from ～7 ka in Eastern China and their constraint on the regional variations of the geomagnetic field
	Fang, Jie 1,2; Zhang, Dong 3; Lu, Peng 4; Fan, Yunchang 5,6; Qi, Kaixian 1,2; Zhang, Tingwei 1; Yang, Shixia 7; Yue, Jianping 7; Cai, Shuhui 1,2; Deng, Chenglong 1,2
	2025-08-01
发表期刊	GEOPHYSICAL JOURNAL INTERNATIONAL
ISSN	0956-540X
卷号	242 期号:2 页码:14
通讯作者	Cai, Shuhui(caishuhui@mail.iggcas.ac.cn)
摘要	Archaeomagnetic study serves as an effective way to investigate the detailed variations of the geomagnetic field during the Holocene. China has accumulated numerous high-quality archaeomagnetic data in recent years, but these data are primarily limited to the period younger than 1500 BCE, which limits our comprehensive understanding of the Holocene geomagnetic field evolution. Here, we carried out archaeomagnetic research on 28 unoriented pottery shards and baked clays collected from two Neolithic archaeological sites, with ages spanning from similar to 5350 to 5030 BCE, in Anhui province, Eastern China. Rock magnetic analyses show that pseudo-single domain magnetite is the main magnetic carrier among the samples with limited contributions from high coercivity minerals such as hematite. The ideal magnetic behaviour demonstrates the samples are suitable for palaeointensity experiments, as confirmed by the palaeointensity results. A total of 14 samples yielded high-fidelity palaeointensity results, indicating that a fast-changed geomagnetic field with virtual axial dipole moments varying from similar to 56 to similar to 91 ZAm(2) over similar to 300 yr. This inference is further evidenced by intensities recovered from the double-remanent components of some samples through vector calculation. Our new data provide reliable anchors for the strength variations of the geomagnetic field in Eastern Asia during the poorly constrained time period before 4000 BCE. With the new data in this study, we updated the previous Chinese archaeointensity reference curve and named the new curve as ArchInt_China3, which extends the previous curve forward for similar to 500 yr. The newly reported archaeointensity data and released reference curve in this study will provide valuable insights into the regional and global geomagnetic field variations during the Holocene, and thus assist in understanding the dynamic processes in the Earth's interior.
关键词	Asia Archaeomagnetism Palaeointensity Rapid time variations
DOI	10.1093/gji/ggaf202
关键词[WOS]	COOLING-RATE ; INTENSITY VARIATIONS ; CURVE ; CERAMICS ; BC ; PERIOD ; SITE ; TOOL
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42388101] ; National Natural Science Foundation of China[42488201] ; National Natural Science Foundation of China[IGGCAS-201905] ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences
项目资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:001516905900001
出版者	OXFORD UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/24529
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Cai, Shuhui
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher & Environm Coevolut, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 3.Chinese Acad Social Sci, Inst Archaeol, Beijing 100710, Peoples R China 4.Mengcheng Cty Cultural Rel Protect Ctr, Bozhou 236000, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 6.Zhejiang Univ, Ocean Coll, Hangzhou 310058, Peoples R China 7.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Fang, Jie,Zhang, Dong,Lu, Peng,等. New archaeointensity results from ～7 ka in Eastern China and their constraint on the regional variations of the geomagnetic field[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2025,242(2):14.
APA	Fang, Jie.,Zhang, Dong.,Lu, Peng.,Fan, Yunchang.,Qi, Kaixian.,...&Deng, Chenglong.(2025).New archaeointensity results from ～7 ka in Eastern China and their constraint on the regional variations of the geomagnetic field.GEOPHYSICAL JOURNAL INTERNATIONAL,242(2),14.
MLA	Fang, Jie,et al."New archaeointensity results from ～7 ka in Eastern China and their constraint on the regional variations of the geomagnetic field".GEOPHYSICAL JOURNAL INTERNATIONAL 242.2(2025):14.