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.