A Study of  ²¹⁰Pb Dating and Climatic Changes of Modern Sediments from Tufa in Huanglong, Sichuan Province

• 责任者：Wang Hua (Institute of Karst Geology ; CAGS ; Guilin 54100 ; China) ; Qin Jiaming
• 刊名：Acta Geoscientica Sinica
• 出版年：2010
• 卷期：31(2)
• 关键词：石灰华 ; tufa ; 铅—210计时 ; Pb-210 dating ; 四川 ; Sichuan Province
• 页码：p.216-222
• 图表：4 illus., 2 tables, 17 refs.,
• 分类号：1400
• issnNo：ISSN1006-3021
• isbnNo：CN11-3474/P

Based on an analysis of carbon and oxygen isotope data from the tufa core, this paper discusses the relationship between stable environmental isotopes and climatic data obtained by instruments with a comparison with other paleo-climatic records obtained by different dating techniques. The δ¹⁸O values changed from -12. 13‰ to -10. 42‰ during 1908-2004, with the average being -11. 23‰ and the variation range being 1.7‰. A comparison of δ¹⁸O values with Dongge Cave and Kahf Defore Cave in the same southwest monsoonal climate area and in the same study period shows that the δ¹⁸O values of the tufa core in Huanglong is higher than those of Cave records, probably attributed to the altitude effects and different distances from moisture source areas. It can be concluded that the tufa core records of Huanglong in the high altitude and middle latitude areas are more sensitive to climatic environmental changes than records of stalagmites in Dongge Cave and Kahf Defore Cave from low altitude areas.