Asian Monsoon Changes on Centennial-Scale and Characters of Heinrich Events During the MIS 3/2 Transition from a Stalagmite Record in Southwest China
详细信息
- 责任者：Zhao Kan (College of Geography Science ; Nanjing Normal University ; Nanjing 210046 ; China) ; Wang Yongjin
- 刊名：Marine Geology & Quaternary Geology
- 出版年：2011
- 卷期：31(2)
- 关键词：石笋 ; stalagmites ; 古季风 ; palaeomonsoon ; Heinrich事件 ; Heinrich event ; 贵州 ; Guizhou Province
- 页码：p.121-128
- 图表：5 illus., 1 table, 46 refs.
- 分类号：1400
- issnNo：ISSN0256-1492
- isbnNo：CN37-1117/P
摘要
A high-resolution stalagmite oxygen isotope record from the Wulu Cave, based on 371 oxygen isotope measurements and 12 precise 230Th dates, has provided a detailed Asian summer monsoon (ASM) history from 29 to 20.8 ka B.P., spanning the marine isotope stage 3 and 2. The calcite δ18O records are essentially similar with the previously reported Hulu record formed during the same stage, although they are geographically far away (about 1 000 kilometers between the two sites). This supports the idea that changes in speleothem δ18O may represent variations in isotopic composition of precipitation associated with large-scale summer monsoon circulation over a large portion of China.
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