Magnetic Properties of Red Clay Section along the Jiu-Lu Highway at Jiujiang, Jiangxi and Implications for Pedogenesis

详细信息   

• 责任者：Hu Zhongxing (College of Geography and Environmental Science ; Zhejiang Normal University ; Jinhua 321004 ; China) ; Zhu Lidong
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54(5)
• 关键词：红粘土 ; red clay ; 环境磁学 ; environmental magnetism ; 江西 ; Jiangxi Province
• 页码：p.1319-1326
• 图表：6 illus., 41 refs.
• 分类号：1400
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

Quaternary red clay in southern China is an important media for the study of paleoenvironmental change. Detailed magnetic characterization was carried out on the JL(Jiu-Lu) red clay section at Jiujiang, Jiangxi Province, with the purpose to investigate the feasibility of magnetic properties in paleoclimate reconstruction. The results show that magnetic susceptibility increases with stronger degree of pedogenesis in the upper weakly weathering layer. However, magnetic susceptibility and S-ratio declines while Hard Isothermal Remanent Magnetization (HIRM) increases significantly in the lower strongly weathering reticulate red clay layer, which results from the enrichment of antiferromagnetic minerals.