Stratigraphy and Paleomagnetism of the Tillite in Jiangshan: Implications for South China Glacial Strata Comparison
Year: 2026
Type: article
Abstract: ABSTRACT The timing, extent and paleogeographic position of Neoproterozoic glaciations remain debated. Here we review Neoproterozoic Nanhua System glacial deposits in South China and present new, high‐quality paleomagnetic data from the Leigongwu Formation (Jiangshan). Thermomagnetic and stepwise thermal demagnetisation of well‐oriented tillite cores yield a stable high‐temperature characteristic remanent magnetisation (ChRM), from which we calculate a site‐mean direction corresponding to a paleolatitude of ~14° N (α95 = 6.8°, k = 77.8). This result, together with regional paleomagnetic data, supports a mid–low latitude position for the South China Block during the Marinoan interval and thus provides independent regional evidence relevant to the Snowball Earth hypothesis. In addition, we discuss implications for inter‐regional correlation of Nanhua glacial strata.
Source: Geological Journal
DOI: 10.1002/gj.70198
Authors: Li Guangrong, Zhu Suwen, Guo Fusheng, Pei Junling, Guan Baowen, Ge Kunpeng, Zhang Weiqiang, Ni Fengjuan, Zhang Qunxi
Institution: East China University of Technology
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: bronze
Funders: National Natural Science Foundation of China, Chinese Academy of Sciences, Nanjing University, East China Institute of Technology, Institute of Geology and Geophysics, Chinese Academy of Sciences, State Key Laboratory for Nuclear Resources and Environment, East China Institute of Technology
Awards: G3667253257, G5734273350, G7489210081
OpenAlex ID: W7118935279