Characters of the Last Interglacial Red Earth in the Hilly Area, Northeastern Guangdong, South China, and Their Climatic Environment Significances

• 责任者：Li Zhiwen (Geography and Planning School ; Sun Yat-Sen University ; Guangzhou 510275 ; China) ; Li Baosheng
• 刊名：Geological Review
• 出版年：2010
• 卷期：56(3)
• 关键词：末次冰期 ; last glacial age ; 广东 ; Guangdong Province
• 页码：p.355-364
• 图表：4 illus., 4 tables, 41 refs.
• 分类号：1400
• issnNo：ISSN0371-5736
• isbnNo：CN11-1952/P

It is revealed by the research that the Jiaoling red earth in the hilly area, northeastern Guangdong Province, South China, developed in the last interglacial period and belongs to silty clay in terms of lithology. The primary oxides of major elements are mainly SiO₂, Al₂O₃ and TFe₂O₃(Fe₂O₃+FeO), of which the contents are 50.10%～53.14%, 23.07%～24.44%, 10.18%～11.40%, respectively, whereas the CaO, Na₂O, MgO and K₂O contents are all below 1%.  Therefore, the authors conclude that the last interglacial northeastern Guangdong Province and even the full extent of South China were in a climatic environment similar to that of the north margin of present tropical zone, and the boundary between the tropical and subtropical zones experienced a northward migration of at least 3 degrees of latitude.